What year did humans start caring about nature?

Many thousands of years ago, the early humans called, "Neanderthals" (nee-AND-er-talls were very careful about protecting the environment. For example, a Neanderthal hunting party would go after their prey, say a buffalo or other large animal, and through clever tactics, kill that animal to provide them with food, heat, coverings and clothes.

Next came the Cro-Magnon (crow-MAN-yunn) man. These people would drive a herd of buffalo or other animal over a cliff to kill them, and then use just one or two of the many dead beasts.

We don't have any written or verbal history that would hint at what point the Neanderthals started caring about nature.