Human intellectual/cognitive capabilities are unprecedented, though.

I'm not sure if we'll live to see it, but I'd be pretty surprised if some fine day humanity won't evolve enough to abandon the primate bodies and decouple humanity from its biology. That is, I believe we'll eventually give birth to thinking machines, and hopefully they'll keep the humanity going even if other branches would possibly fail to the environmental changes.

Unless, of course, we won't make ourselves extinct first.