that there are some things that it is morally wrong to do to animals. Human beings must not do those things, no matter what the cost to humanity of not doing them. Human beings must not do those ...

What do animals need to survive? Discover the basic things all animals need to survive. What do humans need to be healthy? Learn what humans need to be healthy and how to stay healthy.

The bone tools date from more than a million years before our species, Homo sapiens, arose around 300,000 years ago.