Don’t think I need to summarize this one. This is bad news for everyone.
The dinosaurs got wiped out and new life flourished. The same will happen again.
Oh then in that case nbd that we take millions of species who were living in harmony with nature with us. Serves them right for . . . existing in the same 20,000 year period we did.
The dinosaurs got wiped out by a catastrophic meteor impact (or so we think). This is different. We are changing the climate at an accelerated pace that’s never been seen before. Species adapt to things over time. You can’t adapt if the weather isn’t stable, and things dip between super hot and super cold, or visa versa, they stay super hot or super cold. We have other examples of worlds like that in our solar systems, and they are dead worlds.
We are changing the climate at an accelerated pace that’s never been seen before.
He said, right after mentioning a catastrophic meteor impact.
How do you know that the climate is changing at a pace never before seen? Were you there to see it? There have been many mass extinctions in Earth’s history. It’ll be fine.
We know what the climate was like in the past by looking at layers in the earth, tree rings, even carbon dating can sometimes given evidence of how the composition of the atmosphere was in the past. There a lot of neat chemistry that we can use to learn what composition the atmosphere and climate had. Obviously there is some amount of error in models, but we do know.
There have been at least five major mass extinction events in the history of this planet. What will be after us in the future won’t look like it does right now, but right now doesn’t look anything like it did before any of those five events either.
As the saying goes, life finds a way. We just won’t be around to witness it.
Permian Triassic extinction event is the one most similar to current situation.
The level of atmospheric carbon dioxide rose from around 400 ppm to 2,500 ppm with approximately 3,900 to 12,000 gigatonnes of carbon being added to the ocean-atmosphere system during this period.[22] Several other contributing factors have been proposed, including the emission of carbon dioxide from the burning of oil and coal deposits ignited by the eruptions;[27][28] emissions of methane from the gasification of methane clathrates;[29] emissions of methane by novel methanogenic microorganisms nourished by minerals dispersed in the eruptions;
