New research adds weight to the idea that people became less hairy via sexual selection, with results suggesting women with higher levels of disgust prefer clean-shaven men.
"Viruses, like all organisms, adapt and evolve," co-author Joel Wertheim told Newsweek.
Researchers say their findings represent some of the first evidence that evolutionary changes are affecting the time of year that wild animals give birth.
For animal species to survive climate change, they will have to genetically adapt or shift their ranges—or both.
Evolution is a gradual change to the DNA of a species over many generations.
The rare letter discusses topics only known in one other letter from the famous biologist.
Scientists argue that religious people are unable to rise above their instincts, explaining the negative association with intelligence.