#mass extinction
headspace-hotel · 29 days ago
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"Dragon," poem assembled using quotations from Wikipedia articles
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cambrianclown · 3 months ago
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addison-dewitt · 2 months ago
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pirate123456789 · 4 months ago
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top 10 saddest paleozoic deaths
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professor-dumbledope · a month ago
Scientists say it's "almost certain" that debris from the Chicxulub asteroid that led to the mass extinction of the dinosaurs can be found on the moon.
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zespaceblog · 5 months ago
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Volcanic Eruption from Space
Yesterday, a massive underwater volcanic explosion was captured from space, giving a unique glimpse and perspective of the power of Volcanoes. While this blog will always tell you to look up ! There are times when looking down can teach us a thing or two about some of the most powerful events that have shaped the evolution of our planet. It's not just meteor impacts that can cause global carnage, but volcanoes have many times caused mass extinctions and huge changes to our climate.
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The eruption was 40miles south of Tonga in the Pacific, sending out Tsunamis and a cloud of dust 20km into the sky.
The largest mass extinction events on Earth were volcanic in origin, although these were not a single event, but rather a period of sustained volcanic activity over certain areas of the Earth (Siberia, India for example) that were death by a thousand cuts.
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The little Ice Age was thought to have been caused by a number of volcanic explosions in the 12-13th century.
And yes, that bit at the end, that's what we are doing to our planet ourselves, which kind of puts the scary volcanoes into perspective a bit, when we ourselves are doing a far better job at wiping ourselves out.
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silvermoon424 · 9 months ago
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I went to the Field Museum in Chicago last week while I was on vacation (I've been there before, definitely one of my favorite museums!) and they had this really cool exhibit called "Evolving Earth." It covers the entire 4.5 billion year history of our planet with most of the focus going towards the evolution and proliferation of life on Earth.
I wanted to share something I thought was interesting, which was the displays at the end of each exhibit section covering a different era of life on Earth. The displays are about the 6 major mass extinction events throughout Earth's History. I didn't get to photograph the entire displays because they were big but if you're interested in the death tolls of each event:
Mass Extinction #1: 85% of marine species (life had not moved to land yet)
Mass Extinction #2: 50% of all genera (including 97% of vertebrate species)
Mass Extinction #3: Earth's most severe known extinction event, with 83% of genera, 81% of marine species, and 70% of terrestrial vertebrate species going extinct
Mass Extinction #4: 76% of all marine and terrestrial species
Mass Extinction #5: 75% or more of all species on Earth, including all non-avian dinosaurs
Mass Extinction #6: Ongoing and caused by humans. The current rate of extinction of species is estimated to be 100 to 1,000 times higher than natural extinction rates.
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mindblowingscience · 6 months ago
Scientists at the University of Southampton have discovered that two intense periods of volcanism triggered a period of global cooling and falling oxygen levels in the oceans, which caused one of the most severe mass extinctions in Earth history.
The researchers, working with colleagues at the University of Oldenburg, the University of Leeds and the University of Plymouth, studied the effects of volcanic ash and lava on ocean chemistry during a period of extreme environmental change around 450 million years ago. Their findings are published in the journal Nature Geoscience.
Continue Reading.
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alfalfasprouts · 5 months ago
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animerunner · a month ago
Also I’m just realizing that the Collector getting sealed might have resulted in a mass extinction event considering the level of power undoing the seal is implied to
Basically wondering if more than one Titan may have gotten killed in the event of sealing the Collector
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diaryofaphilosopher · 6 months ago
'It matters what ideas we use to think other ideas.' I compost my soul in this hot pile. The worms are not human; their undulating bodies ingest and reach, and their feces fertilize worlds. Their tentacles make string figures. It matters what thoughts think thoughts. It matters what knowledges know knowledges. It matters what relations relate relations. It matters what worlds world worlds. It matters what stories tell stories.
Donna Haraway, on Marilyn Strathern’s thought, in Staying with the Trouble.
Follow Diary of A Philosopher for more quotes!
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environmentalact · a year ago
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lavideenrose · 9 months ago
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politishaun · 5 months ago
About 65 million years after the last mass extinction, which marked the end of dinosaurs' roaming the planet, scientists are warning that we are in the early throes of another such annihilation event. Unlike any other, this sixth mass die-off — or Anthropocene extinction — is the only one caused by humans, and climate change, habitat destruction, pollution and industrial agriculture all play a hand.
In mass extinctions, at least three-quarters of all species cease to exist within about 3 million years. Some scientists believe that at our current rate, we could be on track to lose that number within a few centuries.
Over the next few decades alone, at least 1 million species are at risk of being wiped out. That's according to an estimate in a landmark report published in 2019 — but many scientists say it could well be an undercount.
Trying to predict the results of a complete collapse in biodiversity is almost a black art — ecosystems are incredibly complex.
Scientists agree, however, that there are several clear predictions should extinctions continue at this rate. And all the effects are inextricably linked, like a game of Jenga.
"I think the first thing we'll see is that our food supply starts to dwindle quite markedly, because so much of our food depends on pollination," said Corey Bradshaw, a professor of global ecology at Flinders University in South Australia, who uses mathematical models to show the interplay between humans and ecosystems.
About one-third of the world's food supply relies on pollinators such as bees, and, if they die out, agricultural yields could plummet, Bradshaw said.
Some crop pests may thrive as predators drop off, further impacting monoculture harvests.
And millions of people rely on wild species for nutrition and their livelihoods, particularly on coastal and inland fisheries, which are especially vulnerable to disappearing.
According to Bradshaw, this lack of food security, which will also be connected to increased drought and flooding, will hit poorer regions hardest — particularly sub-Saharan Africa and parts of Southeast Asia.
The quality of soil is also expected to deteriorate if critical microorganisms die off. Though underrepresented in the data, some researchers believe they are potentially vanishing at a faster rate than other species. Their disappearance could lead to worsening erosion, which in turn results in more floods, as well as poorer fertility, which again impacts crop growth.
Colman O'Criodain, the policy manager for conservation organization WWF International, said this was particularly dangerous.
"The organic matter in a way is kind of like the glue that holds everything together. If you think of it like a Christmas pudding, it has some dry ingredients like breadcrumbs and flour and dried fruits, but it's the eggs and the stout and so on that hold it together and make it soft and mushy and give it its shape," O'Criodain said.
A lot of the world's fresh water comes from wetlands that purify and redistribute this life source. The Himalayan water tower for example, which is fed by rivers and wetlands, supplies about two billion people. If systems like these collapse, as a result of impacts including algae blooms and receding vegetation, humanity could lose a lot of water for drinking and agricultural use.
As forests recede, rainfall patterns are likely to shift as evapotranspiration — the process in which moisture is returned to the atmosphere through evaporation and plant transpiration — is affected, further drying out the landscape, as has been seen in the Amazon.
The UN Food and Agriculture Organization estimates that about 10 million hectares (24 million acres) of forest were cut down annually from 2015.
And with the loss of trees and vegetation — fundamental regulators of atmospheric carbon dioxide — climate change is expected to worsen, triggering more extreme weather events. Drier conditions and unhealthy forests also increase the risk of wildfire.
Meanwhile, crop failures and other ecological threats will likely trigger mass migrations as people escape famine and conflict over dwindling resources...
Researchers have also warned that loss of biodiversity could lead to an increased risk of pandemics as wild animals and humans come into closer contact through habitat fragmentation and disruption of natural systems.
The oft-cited example of this already happening is the 2014 Ebola outbreak in West Africa, believed to have been caused by children playing in a hollowed-out tree full of bats. Though the origin of COVID is still unclear, the results of some scientific studies link it to wild bats.
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rave-lord-nito · 9 months ago
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sweetenby · 19 days ago
Every year the outlook for nonhuman species grows grimmer. In the case of marine-mammal species, the International Union for Conservation of Nature now classifies a third as endangered. A recent study by a team of European researchers concluded that even many of those species which seem to be doing all right, such as gray whales, are threatened by climate change. As Mustill himself observes, “To be alive and explore nature now is to read by the light of a library as it burns.”
A bit from The Strange and Secret Ways That Animals Perceive the World
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asmo-ds · 4 months ago
I’ll say it since no one else will
When that asteroid came and killed the dinosaurs
that was a cultural reset
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envirocoffee · 2 months ago
you know what? fuck you *develops roots, frees nutrients in the rocks, spreads over the planet, kills a bunch of stuff* 
oh okay, well fuck YOU *massive volcanoes for millions of years, fucks climate in the opposite way, kills ab 96% of EVERYTHING* 
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sataniccapitalist · a month ago
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environmentalact · 6 months ago
Ecological Armaggedan, when it goes, we go.
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