I learned from Stewart Brand recently that we are not in a 6th mass extinction event Rethinking extinction https://aeon.co/essays/we-are-not-edging-up-to-a-ma

I learned from Stewart Brand recently that we are not in a 6th mass extinction event Rethinking extinction https://aeon.co/essays/we-are-not-edging-up-to-a-mass-extinction https://aeon.co/essays/we-are-not-edging-up-to-a-mass-extinc... I was happy to hear this, because I took it as gospel that we were in one. I was told to worry about the population explosion and the coming ice age back in the 70's. So I take things with a grain of salt. (however, I am not a climate change denier) So I doubt that birds a really dying off across N America. How is this determined? I've road tripped extensively around N America in all 50 states and all Canadian provinces and the most amazing thing is how empty most of the continent is. House cats are not roaming the wilderness killing birds. If you told me birds are disappearing from urban areas I could find it more beleivable.