Although modern humans must now rely on dogs to sniff out drugs and other contraband at airports, our early ancestors may have been capable of the job themselves!
Yoav Gilad
It involves very little effort to create a huge effect.
effort create effect
No other animal relies on cooked food. Perhaps something in the cooking process altered the biochemical requirements for maximal access to nutrients as well as the need to process the natural toxins found in plant and animal foods.
food process found cooking natural animal
When we looked at gene expression, we found fairly small changes in 65 million years of the macaque, orangutan, and chimpanzee evolution.
evolution expression small found
The big question is why are humans so different. What sort of changes in the environment or lifestyle would drive such a rapid shift in the expression of genes - in this case in the liver- in humans and in no other primate?
environment humans expression lifestyle drive question big
drugs humans dogs early job modern ancestors airports
The big question is why are humans so different?
humans question big
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