Ecosystems are extremely complicated things. We're find out that they aren't so delicate, by my God, sooner or later, we're going to cross some invisible line which will cause a catastrophic collapse in our food chain.
Climate - truthful information about climate, related activism and politics.
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.
It's starting to make sense why demographic statisticians postulate that the human population will level off and drop at some point. At first glance, depopulation doesn't seem so bad for us and the planet, but the "how" will be scary.