For the first time in Earth's history, a single species has not only radically changed the planet, it is now aware of having done so.
Climate could lead to an excruciatingly long stretch of heat and drought unseen since the 12th century.
Modern science has reconstructed one of the most famous miracles of the Old Testament. Find out how Moses may have done it.
In a reversal of a 20th-century trend, young, educated whites are increasingly moving to cities over suburbs.
Thinking about setting one of your teen-aged kids adrift on an ice floe? Geoff Green of "Students on Ice" will do it for you.
Children prefer to make friends with those whose speech patterns -- rather than skin color -- mimic their own.