"We're having to re-evaluate the Out-of-Africa theory, and we're having to re-evaluate the species concepts we apply, because in one view of thinking, species should be self-contained units. They don't interbreed with other species."
This is a point that has confused me for some time. Species are not supposed to be capable of reproducing with other species. So why are neanderthals a different species?
The evidence from linguistics seems to confirm an "out of africa" hypothesis, and an origin in South-west Africa
Evidence of deep sea fishing from 42,00 years ago
Efforts to save the black rhino by moving remaining individuals to a reserve in South Africa
I was always confused about Magenta - Where is it on the EM-spectrum? The answer - It isn't!, it's a psychological trick, created by human minds to join the opposite ends of the visible spectrum. It seems our brains really do think of color as a wheel not a spectrum.
An analysis of over 200 primate species by a University of Oxford team suggests that our ancestors gave up their solitary existence when they shifted from being nocturnal creatures to those that are active during the day.
The Anthropocene is here and its not good for large mammals.
An interesting and informative video on human population numbers. The video illustrates birth and death rates , and population numbers for 5 regions of the world for the past thousand years. Pretty high data density and very well explained