Here are a few things we learn in the film ... We can see about a million different colours Most humans are trichromats, which means our eyes have three different types of cone cells: red ...

GETTY IMAGES/AFP INDIAN WELLS, California — Five-time champion Novak Djokovic crashed out in his Indian Wells ATP Masters opener on Saturday, just the latest proof that "things are different ...

As humans we get a lot of benefits from different species and ecosystems. They provide our food, make oxygen, clean our water, control disease, give us medicine and recycle dead things.

As humans we get a lot of benefits from different species and ecosystems. They provide our food, make oxygen, clean our water, control disease, give us medicine and recycle dead things.