About 250M years ago, 90% of species on Earth died during the Permian extinction. All of that loss created a lot of vacant niches to fill.

And not long after, the first mammals, our ancestors, appeared.

I find it comforting to remember that life on this pale blue dot will be resilient - whether we’re part of it or not. #science #nature #history #SharedPlanet

The wide range of responses to this post are quite something. Lots of different expectations about what’s to come on Earth.

I’ve been working on science & policy related to climate challenges in & out of academia for decades. For what it’s worth, I’m firmly on team hope. https://blogs.scientificamerican.com/observations/no-climate-change-will-not-end-the-world-in-12-years/

We can address #climatechange. Many individuals, organizations & nations already are. There’s still time. Not much.

No, Climate Change Will Not End the World in 12 Years

Stoking panic and fear creates a false narrative that can overwhelm readers, leading to inaction and hopelessness

Scientific American Blog Network
@Sheril An issue where the extremes are very loud, but most people see a need for REAL change.
@Sheril I look at it as: The more we do and the sooner we do it, the better off we'll be. It's not a binary success or failure, it's a continuum that we can affect NOW.
@Sheril
*Especially* if we are not part of it.

@Sheril We’re almost certain to be the first indigenous species on this planet to ever become aware of its turbulent history & our evolution, & also the first to understand how fragile our own actions have made our future.

And yet still too stupid to act on that knowledge, despite our endless hubris.

Very sad.

@markmccaughrean @Sheril
The Permian extinction event is one of several, the last being ~65 million years ago.

Who's to say Velociraptors weren't intelligent, zen-like masters of all they surveyed, tending to herds of herbivores?

@BlippyTheWonderSlug @Sheril Is this account run by a bird trying to rewrite history? 🤪
@BlippyTheWonderSlug Harrison's "West of Eden" is very on point about this topic.
@markmccaughrean to have the consciousness to see it all but still be 2-3 years old when everything is about yourself.
@markmccaughrean @Sheril
First species to understand, first species to actually initiate a mass extinction. What does that say for us? We understand and yet we destroy everything anyway.
@Sheril hm, yes, but as someone who does value intelligence I think despite homo sapiens’ many flaws I’d like us to overcome those and succeed. There may not be enough time for a similar re-evolution. And if not for us, it would be such a waste of non-human life as well. I’m not that much of a nihilist
@Sheril I would feel better with an asteroid defense system, personal escape starship and secondary safe location. And maybe with robots to bring me sammiches, ice cream, chocolate, candy, drinks and quality entertainment to my floaty couch. Occasional BBQ would be nice, too, but then I’d also want a moist towelette and maybe a nice bath after I poop.

@Sheril
I believe we're already in an "extinction event."

I imagine that in another 100 million years or so, whoever is the intelligent species at the top of the chain will probably refer to the current time as an "extinction event," too. We've lost a significant number of species over the last few centuries that will "disappear" in the future fossil record.

We'll probably be on that list, as well.

The Earth's Sixth Mass Extinction Is Accelerating

In three human lifetimes, the world could be a radically different place. But it's not too late the help most vulnerable animals on our planet.

Popular Mechanics
@BlippyTheWonderSlug @Sheril And the sixth extinction does not only span the last centuries but the last several ten thousand years. Wherever Homo Sapiens appeared outside of africa (where the fauna had time to adapt to us) species (especially large nutritious species) started to disappear.
@schrotie
True. I wasn't thinking that big, but yeah... Mastodons, Mammoth, Wooly Rhino, and their ilk, were suddenly gone just a few hours ago, in geologic time. Outcompeted by the new kid on the block. Us.
@schrotie @BlippyTheWonderSlug @Sheril
Human manipulation of the environment, especially for mass food production in the Neolithic has been a big mover behind this in antiquity. Now, the process is accelerating at an obscene rate.
@schrotie @BlippyTheWonderSlug @Sheril "Nice megafauna you have there. Be a shame if homo sapiens was to happen them."
@BlippyTheWonderSlug @Sheril
I believe, with the very recent increase in species extinction, the consensus is that the 6th mass extinction is already under way, and that is caused almost exclusively by the influence of humans on their environment.
I will not share how long I personally suspect our species has left, but in geological terms we are becoming extinct right now.

@Sheril also, the frightening realisation that we, too, could be wiped out in a flash!

#EarthReset
#FactoryDefault
#FileErrorCorruption
#Reboot

@Sheril

"You can drive out nature with a pitchfork
But it always comes roaring back again"
Tom Waits - Misery is the River of the World

Nature will always prevail, with or without the human race.

@Sheril The Great Filter is a recently coined term but it is real nonetheless. I had hoped we could get through it but life will go on without us regardless. There is solace in that simple perspective for me.
@Sheril I often say this to my kids when they tell me "the planet is dying". The planet, on its vast time scales, will recover. Some new life will evolve. Humanity, and many other existing species, may not be around to see it.
@Sheril I feel the same way. The Ends of The World by Peter Brannen got me through the last 6 years. We are a blip in an interstitial, and by the end of the next era, there will be no sign we were ever here. I find that very comforting.
@Mcdyer @Sheril @breadandcircuses on the other hand, we might be the only chance that life has to spread beyond our planet. Discovering life elsewhere would be even more comforting.
@Sheril of course it's possible that a new atmosphere will bring an opportunity for a new life but it's not a point. Humans are the only beings actively, consciously destroying other species, the planet and themselves - it's weird isn't it? Unless it's some emergency brake for evolution - something went wrong and must be stopped.

@Sheril "The planet isn't going anywhere. WE are! We're going away. Pack your shit, folks. We're going away. And we won't leave much of a trace, either. Maybe a little Styrofoam ... The planet'll be here and we'll be long gone. Just another failed mutation. Just another closed-end biological mistake. An evolutionary cul-de-sac. The planet'll shake us off like a bad case of fleas. The planet will be here for a long, long, LONG time after we're gone," --George Carlin

https://youtu.be/t-FN_jkF9qI

George Carlin and the earth situation (sub ITA)

YouTube

@Sheril Quite the early eulogy for humanity. Best to tread the tight rope of #GlobalWarming reporting:

“want to scare people enough to take the problem seriously but not so much as to make them feel hopeless [while] they want to reassure people that a climate-secure future is possible but only enough to avoid complacency.”

#ClimateChange #Extinction

https://correspondent.afp.com/watching-world-burn

Watching the world burn

With climate disasters piling up, global warming is getting worse – fast. We had better learn to embrace our despair, argues AFP’s environmental editor Marlowe Hood

Correspondent
@Sheril is it because the dawn of new life will in some indirect way be resurrecting us?
@Sheril agreed. We tend to think of ourselves as important. In the vast universe surely we are relevant? Perhaps not.
With a whole ecosystem based off methane emissions from volcanic sea floor vents and another vibrant ecosystem under Antarctic ice... Yeah, give it a little time and this place will be surging with life forms we can't begin to imagine. Could we imagine dinosaurs if there were no fossils? That's how wild the future will be on earth for billions more years, no matter what we do to ourselves. Knowing that always provides a little comfort.

@Mikal

But extend that to the sure knowledge that the sun will die, swelling to absorb the inner planets well before it does. Everything we know, every bit of history will just cease to exist. The foolishness of colonizing Mars, should it actually happen in the next few millenia, will also cease to have ever existed as far as the universe is concerned.

Cheers!

@dbc3
Yes, we've got, iirc, about 4 billion more years of life left here — about how long since life started. Plenty of time to evolve all sorts of cool critters.

I've always said that if I had a future-travel time machine, I would probably avoid the near futures and go for 10 million years or maybe 300 million from now. I'm sure I'd probably get eaten instantly by something, but it would be cool for a few minutes.

@Sheril the earth will survive no matter what we do. Our survival as a species is still to be determined.
@Sheril
Amen.
I really can't wait for the human extinction to happen. Let mother nature retake the little planet and repurpose it!

@Sheril two of my favorite sayings:
entropy rules
que sera sera

life finds a way despite human interference.

@Sheril this piece by @benwildflower touches on this feeling in a way I love.
“There was life before; there will be life after”

@Sheril

If you like rock. Life on earth is a tower of impossible height each part of the tower balnced delicately on the portion below, while maintaining stzbility to the parts above.

The Asteroid was a MUCH SMALLER problem than Venusification of earth.

Life is a million interactions interconnected to support the possibility of the complexity.

No evidence in all our years of searching for life, anywhere, becauae it is infinitly fragile.

Earth could EASILY become Venus. 500 degrees.

@Sheril So, I’m guessing you’re a “glass half-full” kinda person
@Sheril Until we agree on our universal "Purpose of Life" there can be no good or bad. Climate change, extinction, everything simply is.

@Sheril The dramatic climate changes that we have introduced are not recoverable. The previous extinction events were environmentally recoverable.

A model of overall warming trends continuing is Venus. How much life exists on Venus?

@Sheril All Life will end though in 8 billion years when the Sun starts expanding. That isn't enough time for intelligent life to arise again. So we are probably Life on Earth's last chance to expand beyond this planet.
@Sheril @madamscientist Not related to this post, but looks like in the field, ; so asking a q at the risk of revealing my non-existent knowledge in this field: there was a report of White-throated Sparrows having four sexes that only correct pairs can produce offsprings that can produce offsprings. Are we observing a subspecies being formed? TIA
@Sheril
We must not fall into thinking that humans will become extinct. For all our faults, humans are the pinnacle of evolution. Civilization, science, art, exploration and inevitable first contact with others like us must be in our future. Anything otherwise is tragedy of the highest form.
@Sheril If you accept the Gaia Principle, then Humankind are merely a parasite which has become a noticeable irritant and will be mitigated accordingly.
@Sheril your thinly disguised Fossil Fuel propaganda is cold comfort, thanks
@Sheril Agreed- beyond simply not consuming ourselves out of existence, there's also the question of just how much of the rest of the biosphere we're willing to tear down with us before we figure out how to live within our means.

@Sheril I hope you're right. Life has survived past crises; but then, if it hadn't, we wouldn't be here to reflect on the fact.

There's no guarantee it will survive the crisis we're causing now.

@Sheril It is also estimated that a 5°C rise in average global temperatures will lead to the extinction of all vertebrate life on the planet. Every mammal, bird , fish and reptile. Which is much less than 90% of species but still gutwrenchingly scary. Life will endure, but not as we know it. And it will be another quarter of a billion years before anything close to us could evolve. The planet can maybe do this
@Sheril I'm watching Prime's The Rig and it's exploring this - in a scary, scifi kind of way.