It is definitely more surprising that we found this in chimpanzees.

It's been claimed chimpanzees act mainly for their own ends, but in our experiment there was no reward, and they still helped.

When those two things come together — they obviously do so at 18 months of age and maybe earlier — they are able to help.

It was not until the end of my freshman year in high school that I thought I could really have a future in track and field. I definitely did not think I could make it to the Olympics back then, though; I was just focused on making it to the state finals!

My faith inspires me so much. It is the very reason that I run. I feel that my running is completely a gift from God and it is my responsibility to use it to glorify him.

All our work, our whole life is a matter of semantics, because words are the tools with which we work, the material out of which laws are made, out of which the Constitution was written. Everything depends on our understanding of them.