Let’s admit it, guys: Trees are pretty awesome. They’re nature’s air conditioners, they’re hella pretty to look at, and they’re really efficient carbon sinks. And, it turns out, when they come together to form a forest, trees gain the superpower of living pretty much forever. (The Amazon forest — what’s left of it, that is — has been breathing for about 55 million years, and it’s not even the most ancient on the planet.) The…