Like the early days of the Internet, the dawn of personal genomics promises benefits and pitfalls that no one can foresee.

Organisms are selected to deploy violence only in circumstances where the expected benefits outweigh the expected costs.

Students do everything on laptops these days, so I definitely think electronic books are a trend that's going to expand.

The stirrings of morality emerge early in childhood. Toddlers spontaneously offer toys and help to others and try to comfort people they see in distress.

Human evolution, at first, seems extraordinary. How could the process that gave rise to slugs and oak trees and fish produce a creature that can fly to the moon and invent the Internet and cross the ocean in boats?

We know about every massacre that has taken place close to the present, but the ones in the distant past are like trees falling in the forest with no one to hear them.