Tag Archives: extinction

2022 in Review

First, my heart goes out to anyone who suffered hardship or lost a loved one in 2022. People still died from Covid-19 of course, not to mention other diseases, violence, and accidents. People are living, dying, and suffering horribly in war zones from Ukraine to the Middle East to Myanmar. Having said all that, for those of us living relatively sheltered lives in relatively sheltered locations like the United States, 2022 does not seem like it will rank among the best or worst of years in history.

Highlights of the Year’s Posts

These are the posts I picked each month as most frightening and/or depressing, most hopeful, and most interesting.

Most frightening and/or depressing stories:

  • JANUARY: A collapse of the Game of Thrones ice wall holding back the Thwaites glacier in Antarctica could raise average sea levels around the world by one foot, or maybe 10 feet “if it draws the surrounding glaciers with it”. The good news is that no army of zombies would pour out.
  • FEBRUARY: Philadelphia police are making an arrest in less than 40% of murders in our city, not to mention other violent crimes. Convictions of those arrested are also down. Some of this could be Covid-era dysfunction. But there is a word for this: lawlessness.
  • MARCH: What causes violence? It’s the (prohibition and war on) drugs, stupid. Or at least, partly/mostly, the drugs.
  • APRIL:  The use of small nuclear weapons is becoming more thinkable. Just a reminder that nuclear war is truly insane. Assuming we manage to avoid nuclear war, food insecurity might be our biggest near- to medium-term issue. One lesson of World War II is worries about food security played a role in the diseased minds of both Hitler and Stalin. And food prices right now are experiencing a “giant leap” unprecedented over the last couple decades. Food security, natural disasters, sea level rise, migration, and geopolitical stability all can form ugly feedback loops. And no, I couldn’t limit myself to just one depressing story this month!
  • MAY: The lab leak hypothesis is back, baby! Whether Covid-19 was or was not a lab accident, the technology for accidental or intentional release of engineered plagues has clearly arrived. And also, the world is waking up to a serious food crisis.
  • JUNE: Mass shootings are often motivated by suicidally depressed people who decide to take others with them to the grave.
  • JULY:  One way global warming is suppressing crop yields is by damaging pollen.
  • AUGUST: The fossil fuel industry intentionally used immoral, evil propaganda techniques for decades to cast doubt on climate science and make short-term profits, probably dooming us, our children, and our children’s children. Also, and because that is apparently not enough, nuclear proliferation.
  • SEPTEMBER: If humans are subject to the same natural laws as all other species on Earth, we are doomed to certain extinction by our limited genetic variety, declining fertility, and overexploitation of our habitat. So, how different are we? I can spin up a hopeful story where are evolving and overcoming our limitations through intelligence and technology, but time will tell if this is right or wrong.
  • OCTOBER: Hurricanes are hitting us (i.e., the United States: New Orleans and Puerto Rico being the examples) and we are not quite recovering back to the trend we were on before the hurricane. This seems to be happening elsewhere too, like the Philippines. This is how a system can decline and eventually collapse – it appears stable in the face of internal stressors until it is faced with an external shock, and then it doesn’t bounce back quite all the way, and each time this happens it bounces back a bit less.
  • NOVEMBER:  Asteroids could be used as a weapon.
  • DECEMBER: The U.S. legalized political corruption problem is getting worse, not better. This was one of Project Censored’s most censored stories of 2022.

Most hopeful stories:

  • JANUARY: LED lighting has gotten so efficient that it is a tossup on energy efficiency with daylight coming through a window, because no window is perfectly sealed. Windows still certainly have the psychological advantage.
  • FEBRUARY: “Green ammonia” offers some help on the energy and environmental front.
  • MARCH: There are meaningful things individuals can do to slow climate change, even as governments and industries do too little too late. For example, eat plants, limit driving and flying, and just replace consumer goods as they wear out. I’m mostly on board except that I think we need peace and stability for the long term survival of both our civilization and planetary ecosystem, and we are going to need to travel and get to know one another to give that a chance.
  • APRIL: While we are experiencing a disturbing homicide wave in U.S. cities, violent and overall crime are not necessarily at historical highs and are more or less flat. And yes, this was the most uplifting story I could come up with this month. Brave politicians could use the Ukraine emergency to talk about arms control, but if anybody is talking about that I am missing it.
  • MAY: I came up with (but I am sure I didn’t think of it first) the idea of a 21st century bill of rights. This seems to me like a political big idea somebody could run with. I’ll expand on it at some point, but quick ideas would be to clarify that the right to completely free political speech applies to human beings only and put some bounds on what it means for corporations and other legal entities, and update the 18th century idea of “unlawful search and seizure” to address the privacy/security tradeoffs of our modern world. And there’s that weird “right to bear arms” thing. Instead of arguing about what those words meant in the 18th century, we could figure out what we want them to mean now and then say it clearly. For example, we might decide that people have a right to be free of violence and protected from violence, in return for giving up any right to perpetrate violence. We could figure out if we think people have a right to a minimum standard of living, or housing, or health care, or education. And maybe clean up the voting mess?
  • JUNE: For us 80s children, Top Gun has not lost that loving feeling.
  • JULY: Kernza is a perennial grain with some promise, although yields would have to increase a lot for it to be a viable alternative to annual grains like wheat, corn and rice.
  • AUGUST: “Effective altruism” may give us some new metrics to benchmark the performance of non-profit organizations and give us some insights on dealing with existential risks (like the ones I mention above).
  • SEPTEMBER: Metformin, a diabetes drug, might be able to preemptively treat a variety of diseases colloquially referred to as “old age”.
  • OCTOBER: Gorbachev believed in the international order and in 1992 proposed a recipe for fixing it: elimination of nuclear and chemical weapons [we might want to add biological weapons today], elimination of the international arms trade, peaceful sharing and oversight of civilian nuclear technology, strong intervention in regional conflicts [he seemed to envision troops under Security Council control], promotion of food security, human rights, population control [seems a bit quaint, but maybe we would replace this with a broader concept of ecological footprint reduction today], economic assistance to poorer countries, and expansion of the Security Council to include at least India, Italy, Indonesia, Canada, Poland, Brazil, Mexico, and Egypt [maybe this list would be a bit different today but would almost certainly include Germany, Japan, Brazil, India, and Indonesia].
  • NOVEMBER: A review of Limits to Growth suggests our civilization may be on a path to stagnation rather than collapse. Or, we may be on the cusp of a fantastic science ficition future of abundance brought to us by solar energy, asteroid mining (there are those asteroids again!), and biotechnology.
  • DECEMBER: Space-based solar. This just might be the killer energy app, the last energy tech we need to come up with for awhile. Imagine what we could do with abundant, cheap, clean energy – reverse global warming, purify/desalinate as much water as we need, grow lots of food under lights in cities, power homes/businesses/factories with little or no pollution, get around in low-pollution cars/buses/trains, electrolyze as much hydrogen from water as we need for fuel cells to power aircraft and even spacecraft. Solve all these problems and we would eventually come up against other limits, of course, but this would be an enormous step forward. And space-based solar seems like much less of a fantasy than nuclear fusion or even widespread scaling up of new-generation fission designs.

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

Brilliant Synthesis

Technology

The last couple years, I led off with other things and came around to a technology roundup towards the end. This year, I’ll just shake things up (yes, I’m wild and crazy like that) and lead off with technology developments during the year.

Solar energy has been a long time coming, but 2022 was a year when it really started to be at the forefront of the energy conversation and hard for the skeptics to ignore. We keep hearing that it is now the cheapest form of energy to build and put into operation. That means it is now limited by the materials needed to produce the panels, by the space needed to deploy the panels, and by the transmission and temporary storage infrastructure. Building rooftops take up a lot of space and are mostly not used for other things, so this seems like an obvious place to put the panels. The oceans of pavement we use to operate and park vehicles make up another somewhat obvious place – we can toughen the panels and drive on them, or we can put cheap roofs over the pavement and cover them with panels. Materials can be an issue because many of them are mined and sold by unsavory characters and governments, and there is clearly an environmental impact. But remember that we are trading this off against today’s coal, oil, and natural gas industry, not against some socially and ecologically blameless party. This industry intentionally lied to the public for decades and in the process did immeasurable damage to a planetary biophysical system.

Metals and minerals are also just limited. But even in hard-nosed economic terms, if solar panels are the lowest-cost option as we are hearing, they are holding their own with the costs of extracting, transporting, and burning fossil fuels. We could tax social and environmental impacts at international borders if we had the courage to do so, but even without that it is hard to imagine a system more damaging and irresponsible than the one we have been dealing with for the past century or so.

People will also say we haven’t kept the distribution infrastructure up to date, and this is true. In the United States at least, we don’t keep public infrastructure in a state of good repair. But we do create infrastructure when big business demands it, and they will demand an electric grid that can support their products when it comes to electric vehicles, devices and facilities. There may be a period of pain between when big business demands it and when the U.S. government provides it, and other countries will almost certainly outdistance us.

Longer term, as Fully Automated Luxury Communism tells it, space for solar panels will not be a problem because we will put them in, well, space. And this is not a far-future fantasy. The technology to gather the energy in space and beam it to the Earth pretty much exists now and governments and companies are seriously working on practical implementation. They swear it is safe, and even if it is not totally risk-free remember again all the death, pollution, and permanent planetary destruction the fossil fuel sociopaths have wrought.

Now, what about nuclear power? If we had really focused on it decades ago, we might not be in the climate change mess we find ourselves in now. It could still be a solution to the climate change mess in the future. But given how long it takes to bring new nuclear technology online at a large scale, and how fast solar energy appears to be scaling up and how reliable it appears to be, is it time to stop working on nuclear? I’m talking about known fission technology here. As for fusion, given that it is “always 20 years away” (no matter the year we are actually in), is it time to stop working on it and just throw all our research efforts at solar?

And materials will not be a problem either because we will produce them from asteroids and bring them to Earth, ending material shortages forever. I say, good but better to just use them to build things in space because we are running out of capacity to absorb the byproducts of the materials we already have down here. Just digging things up that were already in the ground and pumping them into the atmosphere and oceans has caused enough trouble.

By the way, once we are in space and messing around with asteroids, government and private actors will be able to divert their trajectories. It is easy to imagine scenarios where this is a great thing that actually saves all life on the planet. It is also easy to imagine scenarios where industrial accidents or intentional government actions threaten life on the planet. An international treaty and some oversight of this seems like a good idea as the messing-with-asteroids industry really starts to get going.

I don’t have my pet mini-mammoth yet, but biotechnology is continuing to gain steam. The idea of treating aging as a disease to be cured seems almost too obvious, but it seems to remove some bureaucratic obstacles that have been holding science and medicine back. Covid-19 was probably, maybe, perhaps not a lab leak. But it could have been, because the technology to make something like it, or much worse, exists in labs right now. It could be made if it has not already, and it could be leaked accidentally or intentionally, if it has not been already. And like nuclear technology, it will proliferate. Compared to nuclear technology, I think it will proliferate much faster and be much easier to hide. I have trouble envisioning any solution to this that does not involve heavy-handed surveillance.

On the positive side, biotechnology may be able to feed us when there are a lot more of us. With cellular agriculture, we can theoretically make meat or just about any kind of plant or animal tissue, and then we can eat it. We may finally be on the verge of modifying plants so they can make more efficient use of the sun’s energy, which is both exciting and scary. With a combination of abundant cheap electricity (from solar energy), abundant cheap materials, and highly efficient lighting though, we might be able to grow all the food we need in high rises without needing frankenplants.

And finally, the idea of controlling the weather with windmills is pretty fascinating. If we figure this one out, we might be able to end damage from floods, droughts, and hurricanes. But obvious Bond villain Elon Musk will also be able to use this to hold the world hostage for ONE HUNDRED TRILLION DOLLARS. That doesn’t really matter though because he is probably already planning to crash an asteroid into us anyway.

Propaganda, Social Media, and Truth

Social media is being blamed for a lot of our social ills at the moment. When we hear “social media” discussed, it seems to mean first and foremost interactive sites like Facebook, Twitter, Instagram, etc. where anyone can post a short snippet of any information they want and make it available to anybody else on the platform. Youtube also seems to fit this mold to some extent, although Youtube is a mix of personal and professionally-produced content. Then, underlying all this are Google search and other algorithms or “search” engines which are searching both for content to show individuals and individuals to show content. There are bloggers using WordPress and a million other tools and sites trying to get their content out, usually not all that widely if my personal experience is any indication (to the 5 or 6 people worldwide who read this blog regularly?) Then there is the huge ecosystem of Amazon and all the other sites trying to sell us stuff. Then there is professional journalistic media and traditional publishing companies trying to have their say (and sell us stuff), and finally there is some sense of the broader internet underlying all this.

Beyond trying to sell us stuff, corporations and non-profit entities are trying to manipulate all these communication channels to get their messages into our heads. This is propaganda, with the main goal being to sell us stuff and a secondary goal being to create awareness and positive images of their brands so they can keep selling us stuff. Also so people won’t complain to politicians about whatever the corporations are doing and risk those politicians meddling in the system in ways that are averse to corporate profits. At the same time, these companies and special interest groups are paying off the politicians to support their interests behind the scenes. This works out well for them (the corporations, special interests and politicians).

Finally we have the U.S. government and governments around the world trying to influence public opinion, occasionally by providing accurate information, sometimes outright lies, and often something in between.

All this is competing for our “attention”. Personally, I strongly prefer having more information to less, and I do not want to see regulation aimed at reducing the amount of information available to me. I believe, perhaps naively, that I have some ability to distinguish truth from falsehood, fact from opinion, and objective/honest communication from dishonest attempts to influence me. Regulation to protect children might be an exception to this – if social media sites are facilitating bullying and leading to mental health problems and even suicides, that is worth dealing with.

“Great Power Competition”, the “International Order”, and the United Nations

A major world leader of our time died in 2022. Okay, two world leaders if you really want to count Queen Victoria, but I am talking about Mikhail Gorbachev. To me, he represents a moment when optimism and visionary leadership had a chance to flower to the benefit of our civilization. He had a vision of long-term peace and stability, with powerful nation-states ceding some of their power to some form of world government. The basic vision was that no nation-state, no matter how powerful, would be able to succeed through violent means if it was opposed by all other nation-states acting together. With the threat of catastrophic war mostly behind us, humanity could have focused on solving all the other thorny problems, from food to energy to pollution to inequality. This was a beautiful vision, but unfortunately its moment passed us by, and we are back to the old cynical idea of coalitions of “great powers” arrayed against each other.

With the threat of catastrophic violence hanging over us, we are not focused on solving those other problems. The United Nations was supposed to at least be the seed of that new order that would usher in long-term peace and prosperity for our species. To be sure, the United Nations has accomplished a lot when it comes to human rights, science, agriculture, refugees, and other areas. It has also been a place where all the not-so-great powers of the world can band together and make their voices somewhat heard. But the Security Council was supposed to be the One Ring to Rule Them All and make “great power competition” obsolete. This has failed utterly, with the Security Council considered all but irrelevant at this point. Not only is “great power competition” ascendant, we seem to be proud of ourselves for bringing it back. If there is a devil, he must truly love “great power competition”.

With the threat of catastrophic violence hanging over us, we have failed utterly to solve other existential problems such as food security, global warming, sea level rise, ever-growing concentration of wealth, and the specter of a Captain Trips extinction plague whether of natural or manmade origin.

Resilience. Despite taking a gut punch, at the end of 2022 it feels as though our planetary civilization weathered the storm of Covid-19 and has more or less rebounded to something like the trend it would have been on. This is the textbook definition of resilience, and something to feel good about. If we get some time in between gut punches, we at least have an opportunity to work on our other problems while also preparing for the next gut punch. If we don’t make progress, maybe we can at least reach a state of stagnation rather than a self-actuated collapse. Can a civilization be resilient and stagnant at the same time? Maybe this is where we find ourselves, at least in the near term.

Happy 2023!

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.

what E.O. Wilson is up to

What, you haven’t received this month’s issue of The Bitter Southerner yet? An interview with E.O. Wilson finds him 90 years old and only semi-retired, living in Massachussetts.

In 2016, Wilson published Half Earth: Our Planet’s Fight for Life, in which he claims that if every nation sets aside half its landmass and waters for nature, then we can ensure the continuing existence of 85% of all species on the planet — including ourselves. The book garnered acclaim and criticism, but, like much of Wilson’s work, its central tenets have become more mainstream over time. 

we know what killed the dinosaurs, right?

Well, apparently there is a loose scientific consensus but still plenty of debate, summarized in this article in The Atlantic.

Before the asteroid hypothesis took hold, researchers had proposed other, similarly bizarre explanations for the dinosaurs’ demise: gluttony, protracted food poisoning, terminal chastity, acute stupidity, even Paleo-weltschmerz—death by boredom. These theories fell by the wayside when, in 1980, the Nobel Prize–winning physicist Luis Alvarez and three colleagues from UC Berkeley announced a discovery in the journal Science. They had found iridium—a hard, silver-gray element that lurks in the bowels of planets, including ours—deposited all over the world at approximately the same time that, according to the fossil record, creatures were dying en masse. Mystery solved: An asteroid had crashed into the Earth, spewing iridium and pulverized rock dust around the globe and wiping out most life forms.

Their hypothesis quickly gained traction, as visions of killer space rocks sparked even the dullest imaginations. nasa initiated Project Spacewatch to track—and possibly bomb—any asteroid that might dare to approach. Carl Sagan warned world leaders that hydrogen bombs could trigger a catastrophic “nuclear winter” like the one caused by the asteroid’s dust cloud. Science reporters cheered having a story that united dinosaurs and extraterrestrials and Cold War fever dreams—it needed only “some sex and the involvement of the Royal Family and the whole world would be paying attention,” one journalist wrote. News articles described scientists rallying around Alvarez’s theory in record time, especially after the so-called impacter camp delivered, in 1991, the geologic equivalent of DNA evidence: the “Crater of Doom,” a 111-mile-wide cavity near the Mexican town of Chicxulub, on the Yucatán Peninsula. Researchers identified it as the spot where the fatal asteroid had punched the Earth. Textbooks and natural-history museums raced to add updates identifying the asteroid as the killer…

While the majority of her peers embraced the Chicxulub asteroid as the cause of the extinction, Keller remained a maligned and, until recently, lonely voice contesting it. She argues that the mass extinction was caused not by a wrong-place-wrong-time asteroid collision but by a series of colossal volcanic eruptions in a part of western India known as the Deccan Traps—a theory that was first proposed in 1978 and then abandoned by all but a small number of scientists. Her research, undertaken with specialists around the world and featured in leading scientific journals, has forced other scientists to take a second look at their data. “Gerta uncovered many things through the years that just don’t sit with the nice, simple impact story that Alvarez put together,” Andrew Kerr, a geochemist at Cardiff University, told me. “She’s made people think about a previously near-uniformly accepted model.”

 

Pleistocene Park

This Atlantic article is about Pleistocene Park, an idea to restore functioning grassland ecosystems that existed during the last Ice Age, complete with woolly mammoths. The mammoths are supposed to keep the grassland from turning into forest, and the grass in turn is supposed to reflect more light and heat, thereby preserving the permafrost.

If this intercontinental ice block warms too quickly, its thawing will send as much greenhouse gas into the atmosphere each year as do all of America’s SUVs, airliners, container ships, factories, and coal-burning plants combined. It could throw the planet’s climate into a calamitous feedback loop, in which faster heating begets faster melting. The more apocalyptic climate-change scenarios will be in play. Coastal population centers could be swamped. Oceans could become more acidic. A mass extinction could rip its way up from the plankton base of the marine food chain. Megadroughts could expand deserts and send hundreds of millions of refugees across borders, triggering global war…

Research suggests that these grasslands will reflect more sunlight than the forests and scrub they replace, causing the Arctic to absorb less heat. In winter, the short grass and animal-trampled snow will offer scant insulation, enabling the season’s freeze to reach deeper into the Earth’s crust, cooling the frozen soil beneath and locking one of the world’s most dangerous carbon-dioxide lodes in a thermodynamic vault.

A lot of the article is about the process of genetically engineering the mammoths. Apparently, we know exactly what mammoths looked like because people have found plenty of intact frozen specimens. I didn’t know that some isolated pockets of mammoths survived until just 2,000 years ago, compared to tens or hundreds of millions of years for the dinosaurs. So there is really no comparison there – they are just cold-adapted cousins of elephants. The plan is not necessarily to clone extinct mammoths, but simply to edit the genes of modern elephants to give them the mammoth traits, then turn them loose and let them adapt and evolve a bit more in the wild.

In another interesting section, it talks about how nutrient cycling in temperate and cold-climate grasslands is much faster than in forests at the same latitudes, rivaled only by tropical forests. And large herbivores are critical both because their digestive systems are where a lot of that cycling takes place, and they also favor grass by keeping trees in check.

Another interesting claim is that Africa is the only continent with large herbivores left because the animals there evolved alongside humans for millions of years, whereas animals in temperate climates did not and were not prepared for humans when they came.

Finally, there’s this:

The park will need to be stocked with dangerous predators. When they are absent, herbivore herds spread out, or they feel safe enough to stay in the same field, munching away mindlessly until it’s overgrazed. Big cats and wolves force groups of grazers into dense, watchful formations that move fast across a landscape, visiting a new patch of vegetation each day in order to mow it with their teeth, fertilize it with their dung, and trample it with their many-hooved plow. Nikita wants to bring in gray wolves, Siberian tigers, or cold-adapted Canadian cougars. If it becomes a trivial challenge to resurrect extinct species, perhaps he could even repopulate Siberia with cave lions and dire wolves.

Yes, dire wolves are a thing.

de-extinction

Here’s the Amazon description of a new (to me) book called Bring Back the King: The New Science of De-extinction.

If you could bring back just one animal from the past, what would you choose? It can be anyone or anything from history, from the King of the Dinosaurs, T. rex, to the King of Rock ‘n’ Roll, Elvis Presley, and beyond.

De-extinction, the ability to bring extinct species back to life is fast becoming reality. Around the globe, scientists are trying to de-extinct all manner of animals, including the woolly mammoth, the passenger pigeon and a bizarre species of flatulent frog. But de-extinction is more than just bringing back the dead. It’s a science that can be used to save species, shape evolution and sculpt the future of life on our planet.

In Bring Back the King, scientist and comedy writer Helen Pilcher goes on a quest to identify the perfect de-extinction candidate. Along the way, she asks if Elvis could be recreated from the DNA inside a pickled wart, investigates whether it’s possible to raise a pet dodo, and considers the odds of a 21st century Neanderthal turning heads on public transport.

Pondering the practicalities and the point of de-extinction, Bring Back the King is a witty and wry exploration of what is bound to become one of the hottest topics in conservation if not in science as a whole in the years to come.

dark matter killed the dinosaurs?

A new book proposes that dark matter changed the course of a comet, which killed the dinosaurs. This article is also interesting to me for its possibly over the top use of analogies to communicate scientific information.

Sixty-­six million years ago, according to her dark-matter disk model, a tiny twitch caused by an invisible force in the far reaches of the cosmos hurled a comet three times the width of Manhattan toward Earth at least 700 times the speed of a car on a freeway. The collision produced the most powerful earthquake of all time and released energy a billion times that of an atomic bomb, heating the atmosphere into an incandescent furnace that killed three-quarters of Earthlings. No creature heavier than 55 pounds, or about the size of a Dalmatian, survived. The death of the dinosaurs made possible the subsequent rise of mammalian dominance, without which you and I would not have evolved to ponder the perplexities of the cosmos.

the case of the missing mammals

Where would the large mammals be if humans hadn’t come along?

How would the world look if humans had never spread out across the Earth? For a start, we’d have a lot more forest, much less pollution, and the stars would look unbelievably bright. But, as a new map shows, the planet would also be absolutely teeming with large mammals, from the Serengeti to Northern Europe and all the way across the Americas. Researchers at Denmark’s Aarhus University have created a global map which shows the distribution of large mammals as it may have been if humans had never left Africa…

The Americas used to be home to 105 large mammal species, including sabre-toothed cats, mastodons, giant sloths and giant armadillos, which all disappeared in the last 100,000 years or so. A previous study by the Aarhus University research team showed that human activity was responsible for this mass extinction

“The reason that many safaris target Africa is… that it’s one of the only places where human activities have not yet wiped out most of the large animals,” said Postdoctoral Fellow Søren Faurby, lead author on the study.

The highest levels of diversity would be in central regions of north and south America, especially parts of Texas, the U.S. Great plains and regions of Brazil and Argentina.

warmest month ever

Eric Holthaus continues his entertaining, slightly sensationalist climate change coverage in Slate:

All this warmth on land is being driven by record-setting heat across large sectionsof the world’s oceans. The NOAA report notes that the warmest 10 months of ocean temperatures on record have occurred in the last 16 months. This is mostly due to a near-record strength El Niño, but the current state of the global oceans has little historical precedent. Since it takes several months for the oceanic warmth of an El Niño to fully reach the atmosphere, 2016 will likely be warmer—perhaps much warmer—than 2015. And that poses grave implications for the world’s ecosystems as well as humans.

We’ve recently entered a new point in the Earth’s climate history. According toreconstructions using tree rings, corals, and ice cores, global temperatures are currently approaching—if not already past—the maximum temperatures commonly observed over the past 11,000 years (i.e., the time period in which humans developed agriculture), and flirting with levels not seen in more than 100,000 years.

But this is the scary part: The current level of carbon dioxide in the atmosphere is higher than at any point since humans first evolved millions of years ago. Since carbon dioxide emissions lead to warming, the fact that emissions are increasing means there’s much more warming yet to come. What’s more, carbon dioxide levels are increasing really quickly. The rate of change is faster than at any point in Earth’s entire 4.5 billion year history, likely 10 times faster than during Earth’s worst mass extinction—the “Great Dying”—in which more than 90 percent of ocean species perished. Our planet has simply never undergone the kind of stress we’re currently putting on it. That stunning rate of change is one reason why surprising studies like the recent worse-than-the-worst-case-scenario study on sea level rise don’t seem so far fetched.