Tag Archives: fertility

August 2025 in Review

Good bye summer 2025!

Most frightening and/or depressing story: A gigantic incoming object could be the alien ship that will put us out of our misery. Okay, probably not. The interesting and scary thing is that as our ability to look at the nearby universe improves, we are seeing more surprising stuff. But how are we supposed to think about let alone do anything about a very low probability existential threat like this one? We are not even responding to the “somewhat likely” (nuclear war, pandemics) and “likely happening right now” (a climate tipping point leading to future collapse) existential threats in front of us. I suggested that the tipping point will be called in retrospect, and 2025 might be a nice round number for the history books.

Most hopeful story: No matter what impression we are being given in the U.S., economic forces continue to push towards renewable energy and electrification worldwide.

Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both: Designer babies are here, and the trend towards the rich and powerful accelerating their own evolution (and a few governments making this available to the masses) can only accelerate.

Designer babies are here

We kind of knew this would happen. IVF has been around and is getting more common, although it’s still expensive. We’re told DNA sequencing means people using IVF can select embryos to reduce the probability of genetic diseases. So far so good. Basic research exists tying genes to traits other than susceptibility to disease, like intelligence and eye color. So it was inevitable that companies would arise offering to let people select embryos tied to these traits, right? And that has now happened. Here is a long rundown of where the state of this industry stands.

The biggest concern, which I share, is that rich people will be able to afford this and nobody else will, so rich people will have even more advantages and the gap between rich and poor will grow. But I do like this quote from the article:

One might object that at least they’re in good company: other products which help rich kids get healthier/smarter/taller/prettier than poor kids include private tutors, gyms, hair salons, health insurance, clothing, books, and food.

Next the article presents the argument that rich people adopting a technology early helps to move it along the path to economies of scale and eventually a cost everyone can afford. This makes a certain amount of sense. But it would make even more sense for governments that care about their people to be the early adopters.

Also, it would be crazy for any forward-thinking government not to cover this; it could save hundreds of thousands of dollars in future health care expenses. In countries with public health care, this comes directly out of the government treasury; even in the US, it’s covered by Medicare after age 65. The government should be begging people to select embryos.

The most persistent cost barrier is likely to be in vitro fertilization itself, a necessary precursor. In the US, 2-3% of babies are born through IVF. For those kids, this is a no-brainer – even if the cost never comes down, the cheaper products are only a fraction of total IVF expense. What about the other 98%? If those parents feel like they have to get embryo selection (and therefore IVF) to keep up, this could be a significant burden. IVF isn’t fun – it requires pumping a woman full of mind-altering hormones for weeks, extracting eggs in a minor surgery, and then implanting embryos in another minor surgery, all with a decent chance that some step will fail and you’ll have to do it all again. It also costs $15,000 in the US (less in poorer countries), and unlike the genetics, the cost has barely gone down in the past twenty-five years.

Israel is cited as a country that is offering universal free IVF to its citizens. And here in the U.S., policies that have favorable long-term benefit-cost ratios just implement themselves, right?

All this is without any form of genetic engineering, remember. You are just selecting within the variation in naturally-occurring embryos. One can imagine accelerating this even more if generations of embryos can be spliced and diced by AIs and robots in a short amount of time. And even more if the actual genes are manipulated. (Ethical issues TBD, but if it can be done, someone somewhere will do it eventually.)

Incidentally, Brave New World is supposed to enter the public domain in the U.S. in 2028. But here is a copy you can buy for only $6000!

https://www.abebooks.com/servlet/BookDetailsPL?bi=32104210021&ref_=ps_ggl_17738760402&cm_mmc=ggl-_-COM_Shopp_Rare-_-product_id=bi%3A%2032104210021-_-keyword=&gad_source=1&gad_campaignid=17181841339&gbraid=0AAAAAD3Y6gtcv40_Qjr2D1xBL4VjC3nin&gclid=CjwKCAjwhuHEBhBHEiwAZrvdcoWyZ_ZjsnURlTPQYuYLdu9EQjGJxngizjT_cWCIs38mKkv7xF6U3hoCBYIQAvD_BwE

babies with three parents

This is basically what it sounds like. The chromosomes come from two people (still referred to as a “mother” and “father” at this point in history) and the mitochondria come from a third (female) person. The egg is implanted in the (first) female who brings the baby to term and gives birth, but I suppose there is no reason this has to be the case. The purpose (at this point in history) is to avoid certain rare genetic diseases, and this has worked effectively and produced healthy babies.

Mitochondrial donation treatment, or MDT, aims to prevent children from inheriting mutated mitochondria. The procedure involves fertilising the mother’s egg with the father’s sperm and then transferring the genetic material from the nucleus into a fertilised healthy donor egg that has had its own nucleus removed. This creates a fertilised egg with a full set of chromosomes from the parents, but healthy mitochondria from the donor. The egg is then implanted into the womb to establish a pregnancy.

I have no moral objection to this. Reproduction was always inevitably going to get higher tech over time. The problem is more that wealthy people will have access and others won’t, unless or except in places where governments make other choices.

Covid and testes

According to this article, there is some evidence of a decline in male fertility since the pandemic, and this is on top of the known long-term decline in male fertility. For one thing, the virus actually infects the testes themselves. But another thing I didn’t know (or never thought a lot about) is that hormones originating the brain have an important effect on sperm production, so a drop in sperm production might not indicate a physical problem with your testicles themselves.

This article also says that when couples have trouble conceiving for biological reasons, about half the time the problem originates in the male and about half the time in the female. This kind of makes sense. I suspect chemicals in our air, water, and/or food, combined with the stress and time-constraints of modern urban, industrialized life.

Other things that certainly affect fertility rates in a social sense are educated and employed women coupled with (lack of) policies to support families and childcare. I believe pressure on men to work long hard hours to support a family financially somewhat obviously has an effect here too, but maybe this is controversial to some.

If I didn’t have to work quite as long and hard at my testicle-shrinking job, I could spend more time with my children or help more with housework. You can work, help with children, have a great marriage, help care for aging relatives, and maximize your own mental and physical health, but there are some tradeoffs between these desirable objectives for both men and women. The decline of multi-generational households and extended family living close by certainly doesn’t help. There may be no return to the past, but as we lose these aspects of our culture we may need public policy to step in and help fill the gap. In the U.S. at least, that isn’t happening, and we are all standing around scratching our heads as to why we have to give up aspects of our lives (like our health, and strong marriages!) just to keep the whole house of cards from collapsing.

extinction debt

Paleontologist Henry Gee says humans have an extinction debt because we have very low genetic variety caused by past bottlenecks, our fertility is declining, and we have overexploited our habitat.

This combination of factors might indeed doom other species. I would like to believe our species’ intelligence and technology gives us the ability to adapt our way out of the mess we have created orders of magnitude faster than other species would. Of course, the possibility that we can does not guarantee we will.

abortion

This is the time on the show where I say I am not going to comment on divisive social issues on this blog, and then I do anyway. I have just a few things to say: (1) I support the right to choose. (2) I can empathize with the point of view of people who have strong moral or religious objections to abortion. There can never be a true consensus on this issue. (3) Abortion is much less common than it used to be because we have effective birth control technology and by and large people have access to it and use it. We need even more technology, especially for men. It’s one of those research areas that has been neglected by the private sector, and governments need to step in. We need much better access and information and much less stigma to access the birth control technology we have, starting with teenagers whether we like it or not. (4) We should be able to reach a consensus that the goal is for all children who are brought into the world to be wanted and loved. Abortion is a small part of this answer, for now, but family planning and birth control are most of the answer. (5) If the Supreme Court takes family planning and birth control away from us, I want to say I will be out in the streets protesting, but I may also look into Canadian naturalization options. I like to hedge my bets when things are going downhill that are outside my direct control. (6) Clarence Thomas, you are corrupt, you stink and you should be impeached. (7) Read The Handmaid’s Tale if you haven’t. I didn’t believe this work of fiction could become a reality but we have started down the slippery slope.

2021: Year in Review

As per usual, I’ll list out and link to the stories I chose as the most frightening, most hopeful, and most interesting each month in 2021. Then I’ll see if I have anything smart to say about how it all fits together.

Survey of the Year’s Stories and Themes

Most frightening and/or depressing stories:

  • JANUARY: A China-Taiwan military conflict is a potential start-of-World-War-III scenario. This could happen today, or this year, or never. Let’s hope for the latter. This is a near-term existential risk, but I have to break my own “rule of one” and give honorable mention to two longer-term scary things: crashing sperm counts and the climate change/fascism/genocide nexus.
  • FEBRUARY: For people who just don’t care that much about plants and animals, the elevator pitch on climate change is it is coming for our houses and it is coming for our food and water.
  • MARCH: In the U.S. upper Midwest (I don’t know if this region is better or worse than the country as a whole, or why they picked it), electric blackouts average 92 minutes per year, versus 4 minutes per year in Japan.
  • APRIL: One of the National Intelligence Council’s scenarios for 2040 involves “far-reaching changes designed to address climate change, resource depletion, and poverty following a global food catastrophe caused by climate events and environmental degradation”.
  • MAY: The Colorado River basin is drying out.
  • JUNE: For every 2 people who died of Covid-19 in the U.S. about 1 additional person died of indirect effects, such as our lack of a functioning health care system and safe streets compared to virtually all our peer countries.
  • JULY: The western-U.S. megadrought looks like it is settling in for the long haul.
  • AUGUST: The U.S. is not prepared for megadisasters. Pandemics, just to cite one example. War and climate change tipping points, just to cite two others. Solutions or at least risk mitigation measures exist, such as getting a health care system, joining the worldwide effort to deal with carbon emissions, and as for war, how about just try to avoid it?
  • SEPTEMBER: The most frightening climate change tipping points may not be the ones we hear the most about in the media (at least in my case, I was most aware of melting ice sheets in Greenland and Antarctica, collapse of ocean circulation patterns). The most damaging may be melting permafrost on land and methane hydrates underwater, both of which contain enormous amounts of methane which could set off a catastrophic and unstoppable feedback loop if released in large quantities.
  • OCTOBER: The technology (sometimes called “gain of function“) to make something like Covid-19 or something much worse in a laboratory clearly exists right now, and barriers to doing that are much lower than other types of weapons. Also, because I just couldn’t choose this month, asteroids can sneak up on us.
  • NOVEMBER: Freakonomics podcast explained that there is a strong connection between cars and violence in the United States. Because cars kill and injure people on a massive scale, they led to an expansion of police power. Police and ordinary citizens started coming into contact much more often than they had. We have no national ID system so the poor and disadvantaged often have no ID when they get stopped. Everyone has guns and everyone is jumpy. Known solutions (safe street design) and near term solutions (computer-controlled vehicles?) exist, but are we going to pursue them as a society? I guess I am feeling frightened and/or depressed today, hence my choice of category here.
  • DECEMBER: Mass migration driven by climate change-triggered disasters could be the emerging big issue for 2022 and beyond. Geopolitical instability is a likely result, not to mention enormous human suffering.

Most hopeful stories:

  • JANUARY: Computer modeling, done well, can inform decisions better than data analysis alone. An obvious statement? Well, maybe to some but it is disputed every day by others, especially staff at some government regulatory agencies I interact with.
  • FEBRUARY: It is possible that mRNA technology could cure or prevent herpes, malaria, flu, sickle cell anemia, cancer, HIV, Zika and Ebola (and obviously coronavirus). With flu and coronavirus, it may become possible to design a single shot that would protect against thousands of strains. It could also be used for nefarious purposes, and to protect against that are ideas about what a biological threat surveillance system could look like.
  • MARCH: I officially released my infrastructure plan for America, a few weeks before Joe Biden released his. None of the Sunday morning talk shows has called me to discuss so far. Unfortunately, I do not have the resources of the U.S. Treasury or Federal Reserve available to me. Of course, neither does he unless he can convince Congress to go along with at least some portion of his plans. Looking at his proposal, I think he is proposing to direct the fire hoses at the right fires (children, education, research, water, the electric grid and electric vehicles, maintenance of highways and roads, housing, and ecosystems. There is still no real planning involved, because planning needs to be done in between crises and it never is. Still, I think it is a good proposal that will pay off economically while helping real people, and I hope a substantial portion of it survives.
  • APRIL: Giant tortoises reach a state of “negligible senescense” where they simply don’t age for a long time. Humans are distant relatives of giant tortoises, so maybe we can aspire to this some day. They are not invulnerable to injury and disease.
  • MAY: An effective vaccine for malaria may be on the way. Malaria kills more children in Africa every year than Covid-19 killed people of all ages in Africa during the worst year of the pandemic. And malaria has been killing children every year for centuries and will continue long after Covid-19 is gone unless something is done.
  • JUNE: Masks, ventilation, and filtration work pretty well to prevent Covid transmission in schools. We should learn something from this and start designing much healthier schools and offices going forward. Design good ventilation and filtration into all buildings with lots of people in them. We will be healthier all the time and readier for the next pandemic. Then masks can be slapped on as a last layer of defense. Enough with the plexiglass, it’s just stupid and it’s time for it to go.
  • JULY: A new Lyme disease vaccine may be on the horizon (if you’re a human – if you are a dog, talk to your owner about getting the approved vaccine today.) I admit, I had to stretch a bit to find a positive story this month.
  • AUGUST: The Nordic welfare model works by providing excellent benefits to the middle class, which builds the public and political support to collect sufficient taxes to provide the benefits, and so on in a virtuous cycle. This is not a hopeful story for the U.S., where wealthy and powerful interests easily break the cycle with anti-tax propaganda, which ensure benefits are underfunded, inadequate, available only to the poor, and resented by middle class tax payers.
  • SEPTEMBER: Space-based solar power could finally be in our realistic near-term future. I would probably put this in the “interesting” rather than “hopeful” category most months, but I really struggled to come up with a hopeful story this month. I am at least a tiny bit hopeful this could be the “killer app” that gets humanity over the “dirty and scarce” energy hump once and for all, and lets us move on to the next layer of problems.
  • OCTOBER: The situation with fish and overfishing is actually much better than I thought.
  • NOVEMBER: Urban areas may have some ecological value after all.
  • DECEMBER: Covid-19 seems to be “disappearing” in Japan, or at least was before the Omicron wave. Maybe lessons could be learned. It seems possible that East Asian people have at least some genetic defenses over what other ethnic groups have, but I would put my money on tight border screening and an excellent public health care system. Okay, now I’m starting to feel a bit depressed again, sitting here in the U.S. where we can’t have these nice things thanks to our ignorant politicians.

Most interesting stories, that were not particularly frightening or hopeful, or perhaps were a mixture of both:

  • JANUARY: There have been fabulous advances in note taking techniques! Well, not really, but there are some time honored techniques out there that could be new and beneficial for many people to learn, and I think this is an underappreciated productivity and innovation skill that could benefit people in a lot of areas, not just students.
  • FEBRUARY: At least one serious scientist is arguing that Oumuamua was only the tip of an iceberg of extraterrestrial objects we should expect to see going forward.
  • MARCH: One study says 1-2 days per week is a sweet spot for working from home in terms of a positive economic contribution at the national scale. I think it is about right psychologically for many people too. However, this was a very theoretical simulation, and other studies attempting to measure this at the individual or firm scale have come up with a 20-50% loss in productivity. I think the jury is still out on this one, but I know from personal experience that people need to interact and communicate regularly for teams to be productive, and some people require more supervision than others, and I don’t think technology is a perfect substitute for doing these things in person so far.
  • APRIL: Hydrogen fuel cells may finally be arriving. Not so much in the U.S., where we can’t have nice things.
  • MAY: I learned about Lawrence Kohlberg, who had some ideas on the use of moral dilemmas in education.
  • JUNE: The big U.S. government UFO report was a dud. But what’s interesting about it is that we have all quietly seemed to have accepted that something is going on, even if we have no idea what it is, and this is new.
  • JULY: “Cliodynamics” is an attempt at a structured, evidence-based way to test hypotheses about history.
  • AUGUST: Ectogenesis is an idea for colonizing other planets that involves freezing embryos and putting them on a spaceship along with robots to thaw them out and raise them. Fungi could also be very useful in space, providing food, medicine, and building materials.
  • SEPTEMBER: Philip K. Dick was not only a prolific science fiction author, he also developed a comprehensive theory of religion which could possibly even be the right one. Also, possibly related but not really, if there are aliens out there they might live in creepy colonies or super-organisms like ants or termites.
  • OCTOBER: I thought about how to accelerate scientific progress: “[F]irst a round of automated numerical/computational experiments on a huge number of permutations, then a round of automated physical experiments on a subset of promising alternatives, then rounds of human-guided and/or human-performed experiments on additional subsets until you hone in on a new solution… [C]ommit resources and brains to making additional passes through the dustbin of rejected results periodically…” and finally “educating the next generation of brains now so they are online 20 years from now when you need them to take over.” Easy, right?
  • NOVEMBER: Peter Turchin continues his project to empirically test history. In this article, he says the evidence points to innovation in military technologies being driven by “world population size, connectivity between geographical areas of innovation and adoption, and critical enabling technological advances, such as iron metallurgy and horse riding“. What does not drive innovation? “state-level factors such as polity population, territorial size, or governance sophistication“. As far as the technologies coming down the pike in 2022, one “horizon scan” has identified “satellite megaconstellations, deep sea mining, floating photovoltaics, long-distance wireless energy, and ammonia as a fuel source”.
  • DECEMBER: Time reminded us of all the industries Elon Musk has disrupted so far: human-controlled, internal-combustion-fueled automobiles; spaceflight; infrastructure construction (I don’t know that he has really achieved any paradigm shifts here, but not for lack of trying), “artificial intelligence, neurotechnology, payment systems and cryptocurrency.” I’m not sure I follow a couple of these, but I think they missed satellites.

Continuing Signs of U.S. Relative Decline

Signs of U.S. decline relative to our peer group of advanced nations are all around us. I don’t know that we are in absolute decline, but I think we are now below average among the most advanced countries in the world. We are not investing in the infrastructure needed in a modern economy just to reduce friction and let the economy function. The annual length of electric blackouts in the U.S. (hours) compared to leading peers like Japan (minutes) is just one telling indicator. In March, I looked at the Build Back Better proposal and concluded that it was more like directing a firehose of money at a range of problems than an actual plan, but I hoped at least some of it would happen. My rather low but not zero expectations were met, as some limited funding was provided for “hard infrastructure” and energy/emissions projects, but little or nothing (so far, as I write this) to address our systemic failures in health care, child care, or education. The crazy violence on our streets, both gun-related and motor vehicle-related, is another indicator. Known solutions to all these problems exist and are being implemented to various extents by peer countries. Meanwhile our toxic politics and general ignorance continue to hold us back. Biden really gave it his best shot – but if this is our “once in a generation” attempt, we are headed down a road where we will no longer qualify as a member of the pack of elite countries, let alone its leader.

The Climate Change, Drought, Food, Natural Disaster, Migration and Geopolitical Instability Nexus

2021 was a pretty bad year for storms, fires, floods, and droughts. All these things affect our homes, our infrastructure, our food supply, and our water supply. Drought in particular can trigger mass migration. Mass migration can be a disaster for human rights and human dignity in and of itself, and managing it effectively is difficult even for well-intentioned governments. But an insidious related problem is that migration pressure can tend to fuel right wing populist and racist political movements. We see this happening all over the world, and the situation seems likely to get worse.

Tipping Points and other Really Bad Things We Aren’t Prepared For

We can be thankful that nothing really big and new and bad happened in 2021. My apologies to anyone reading this who lost someone or had a tough year. Of course, plenty of bad things happened to good people, and plenty of bad things happened on a regional or local scale. But while Covid-19 ground on and plenty of local and regional-scale natural disasters and conflicts occurred, there were no new planetary-scale disasters. This is good because humanity has had enough trouble dealing with Covid-19, and another major disaster hitting at the same time could be the one that brings our civilization to the breaking point.

So we have a trend of food insecurity and migration pressure creeping up on us over time, and we are not handling it well even given time to do so. Maybe we can hope that some adjustments will be made there to get the world on a sustainable track. Even if we do that, there are some really bad things that could happen suddenly. Catastrophic war is an obvious one. A truly catastrophic pandemic is another (as opposed to the moderately disastrous pandemic we have just gone through.) Creeping loss of human fertility is one that is not getting much attention, but this seems like an existential risk if it were to cross some threshold where suddenly the global population starts to drop quickly and we can’t do anything about it. Asteroids were one thing I really thought we didn’t have to worry much about on the time scale of any human alive today, but I may have been wrong about that. And finally, the most horrifying risk to me in the list above is the idea of an accelerating, runaway feedback loop of methane release from thawing permafrost or underwater methane hydrates.

We are almost certainly not managing these risks. These risks are probably not 100% avoidable, but since they are existential we should be actively working to minimize the chance of them happening, preparing to respond in real time, and preparing to recover afterward if they happen. Covid-19 was a dress rehearsal for dealing with a big global risk event, and humanity mostly failed to prepare or respond effectively. We are lucky it was one we should be able to recover from as long as we get some time before the next body blow. We not only need to prepare for much, much worse events that could happen, we need to match our preparations to the likelihood of more than one of them happening at the same time or in quick succession.

Technological Progress

Enough doom and gloom. We humans are here, alive, and many of us are physically comfortable and have much more leisure time than our ancestors. Our social, economic, and technological systems seem to be muddling through from day to day for the time being. We have intelligence, science, creativity, and problem solving abilities available to us if we choose to make use of them. Let’s see what’s going on with technology.

Biotechnology: The new mRNA technology accelerated by the pandemic opens up potential cures for a range of diseases. We need an effective biological surveillance system akin to nuclear weapons inspections (which we also need) to make sure it is not misused (oops, doom and gloom trying to creep in, but there are some ideas for this.) We have vaccines on the horizon for diseases that have been plaguing us for decades or longer, like malaria and Lyme disease. Malaria kills more children worldwide, year in and year out, than coronavirus has killed per year at its peak.

Promising energy technologies: Space based solar power may finally be getting closer to reality. Ditto for hydrogen fuel cells in vehicles, although not particularly in the U.S. (I’m not sure this is preferable to electric vehicles for everyday transportation, but it seems like a cleaner alternative to diesel and jet fuel when large amounts of power are needed in trucking, construction, and aviation, for example.)

Other technologies: We are actually using technology to catch fish in more sustainable ways, and to grow fish on farms in more sustainable ways. We are getting better at looking for extraterrestrial objects, and the more we look, the more of them we expect to see (this one is exciting and scary at the same time). We are putting satellites in orbit on an unprecedented scale. We have computers, robots, artificial intelligence of a sort, and approaches to use them to potentially accelerate scientific advancements going forward.

The State of Earth’s Ecosystems

The state and trends of the Earth’s ecosystems continue to be concerning. Climate change continues to churn through the public consciousness and our political systems, and painful as the process is I think our civilization is slowly coming to a consensus that something is happening and something needs to be done about it (decades after we should have been able to do this based on the evidence and knowledge available.) When it comes to our ecosystems, however, I think we are in the very early stages of this process. This is something I would like to focus on in this blog in the coming year. My work and family life are busy, and I have decided to take on an additional challenge of becoming a student again for the first time in the 21st century, but somehow I will persevere. If you are reading this shortly after I write it in January 2022, here’s to good luck and prosperity in the new year!

a new book about longevity research

We should try to be more like the Galapagos tortoises, which achieve a state of “negligible senescence” and stay there for many decades. This is according to a new book called Ageless: The New Science of Getting Older without Getting Old. From the New York Times (which, just as a reminder, I will never subscribe to until/unless they apologize for lying to me about weapons of mass destruction):

This is, in fact, “what we should aim for,” Steele says: “a risk of death, disability, frailty and illness which doesn’t depend on how long ago you were born.” In precise and sometimes dense detail he lays out the means by which science could effectively eliminate human aging. These approaches fall into four categories: “removing bad things that accumulate,” “renewing things which are broken or lost,” “repairing things which are damaged or out of kilter” and “reprogramming our biology to slow or reverse aging.”

New York Times

Overpopulation and funding pensions might become an issue in such a world. Then again, if we are really losing our ability to reproduce through natural means, we might need to become a living dead species just to be able to stick around for awhile.

more free time at home = more babies?

The answer is no. Early in the pandemic, I heard people suggesting that having healthy young couples home more with time on their hands would result in a baby boom. The data show that the opposite is true. On aggregate, people actually make somewhat rational economic decisions about having children. When times are uncertain, a fraction of people decide to postpone plans they might have had to have children, and a certain fraction of those people either miss their window or just change their minds. This shows up in the data.

The article acknowledges that immigration is a potential answer to this. But it is difficult politically, and even if you can convince your population that it is a good idea, you need a good plan to make sure the immigrants can make a positive economic contribution, and you need a plan to ease them into your culture. This doesn’t mean erasing their culture, religion, or language, of course, but nor do you want your culture, religion, or language to change massively in a short time or your country may lose its sense of national identity. Having a sense of national identity while still being relatively trusting and tolerant is a balancing act, and my thought is that you want to allow change but try to make it slow and gradual. Maybe we need a Federal Reserve of Cultural Change to manage this rate.

As a working parent, I also recognize that spending more time at home does not mean more free time for everyone. Working from home full time and taking care of young children who are also home all the time, with no babysitters or minimal support from grandparents and extended family, has been very difficult for many people, including yours truly. If you are not in this situation, those of us who are may chafe a bit when you tell us how “bored” you are. But I also recognize there have been no happy mediums, with part of the population stressed out of their minds and half bored out of their minds, and some of the people who are bored (like grandparents) wishing they could help more but unable to.

sperm counts and clean chemistry

Yes, according to one study from 2017, sperm counts are crashing and if you just extrapolate out in time it leads to disaster for the human race. Now, I had heard that sperm counts have dropped steadily over the decades, and we still have plenty of sperm for now, but we don’t know where the trend is headed next. I know about the concerns with endocrine disrupters. We also know that fertility is down for a variety of reasons, beginning with women around the world having more choices in terms of education and career.

This comprehensive meta-regression analysis reports a significant decline in sperm counts (as measured by SC and TSC) between 1973 and 2011, driven by a 50-60% decline among men unselected by fertility from North America, Europe, Australia and New Zealand. Because of the significant public health implications of these results, research on the causes of this continuing decline is urgently needed.

Temporal trends in sperm count: a systematic review and meta-regression analysis

I assume we are probably headed for a world of more technologically-assisted reproduction for a variety of reasons, beginning with just wanting to have more control over our fertility at various stages of our lives. But endocrine disrupters are potentially bad news for humans and for ecosystems. We don’t really try very hard to look for safer and equally functional chemicals before we put lots of them in the environment and in our bodies. I believe better living through chemistry does make our lives better on balance. For example, get rid of food preservatives or water disinfectants and we would instantly cause massive amounts of suffering and death. But get rid of most of the weird stuff in my shampoo, and I would still be able to wash my hair just fine. Building materials are a tough one. The tar on my roof and siding on my house are highly functional and beneficial, but they both cause pollution in production, manufacturing, and most likely cause water and air pollution. We can say similar things for materials used to build our streets and highways. We should look for clean but equally functional substitutes for all of these. And in the meantime, we should probably impose taxes to offset the impact these materials cause. This could both fund research into alternatives and provide some incentive to adopt alternatives as they become available.