nostr:npub1zdp33shl69xr0uq3x8n5gsjykq9upycwh6nqm02c3f6x0frrn0dq42vqv8 

I don't think the genetic bottleneck theory is new but the experimental methodology seems to be?  

Also: super volcanoes. Dangerous things.

https://www.npr.org/sections/krulwich/2012/10/22/163397584/how-human-beings-almost-vanished-from-earth-in-70-000-b-c