Ocean acidification and the potential collapse of the planktonic base of the food web. By a long shot, IMO.

Caused by... Anthropological climate change due to CO2 dissolution into oceans' waters, so it's a subset of the larger issue, fix pumping CO2 into the atmosphere then tackling ocean acidification becomes more easily approachable.

Sure. My point is only that temperature changes in and of themselves, as bad as they are, aren't the most incipient danger.

That was the kind of Socratic point of my question.. I agree 100%

why do you think ocean acidification happens

Mass extinctions due to things like insecticides.

This. I’ve even considered buying a large swath of land and letting it go fully natural.

I found a permaculture community and found a guy who loves to tend to the land but has no money, so I gave him a downpayment to buy an 8 acre piece of land about 2 hours away from me.

> letting it go fully natural

The piece of land we bought was fully natural for a long time and it wasn't pleasant when I first visited. It was extremely thick and hard to even walk about, so the first step we had to do is clear it out to make a living space.

Here's his blog about his updates on the land: https://libresults.com/c/walkabout-update-7-lots-of-rain-and...

You could start a land trust of some kind. Massachusetts has a huge one called the Trustees and many of the best hiking trails and beaches are actually Trustees land. It’s private, but generally open to the public. Tax-free for them, which would be better than you paying property taxes on unused land.

this is a great idea

Chemicals in our food and water supplies.