501
temperature timeline
(imgs.xkcd.com)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
Earth has been iceless before of course, and I've heard people claim its not a problem for it to happen again.
But if only this heating had occured slowly over a period of ~45 million years, nobody would have panicked. We'd adapt. Fauna and flora would adapt. We'd not even notice the ice caps melting.