Acid rain is a real thing, if you live near coal burning plants and industrial areas, especially.
Global warming. Car exhaust, cow methane (not farts, but intestinal gas from burps, contrary to popular belief), and heat retention from concrete and asphalt. Cow ass fault.
Over-fishing of the oceans.
The great barrier reef now dead.

Volcanoes and asteroids make me happy;
They are not our fault.

Sad (... or funny?), we have the power and technology to prevent our extinction for a billion years to come, but chose to hasten it instead.

McDonald's and cell phones and MTV and aliens on the history channel and Trump trying to kill Bert and Ernie and Mr. Rogers rolling over in his grave and Carl Sagan getting stoned and Stephen Hawking paid a prostitute to jack him off while watching Alien Covenant at the AMC theater and $500,000 was paid by Cambridge to keep it quiet. No, really!