Sure, the strongest and most adaptable life forms survived each mass extinction event, but our planet itself is middle aged in its “lifespan” of being able to s

Sure, the strongest and most adaptable life forms survived each mass extinction event, but our planet itself is middle aged in its “lifespan” of being able to support higher life forms. We (as in life on earth, not just humanity) don’t have much runway for that many more do-overs.