Paul Davies

Scientists peer inside the mechanisms of aging, tamper with the cellular makeup of DNA, and imagine a world capable of curing death like a disease.

The ticking clock could just be a trick of the mind; looking at the possibilities that science can make the clock move backwards.

New research begins to reveal a hidden force in the universe -- one that penetrates space with trillions of invisible connections, instantly linking every place in the world and joining the future with the past.

Our universe seems real. But what if it's a videogame? If you thought The Matrix was only a farfetched movie fantasy, think again. Scientists in a variety of fields are taking seriously the possibility that we live in a virtual reality.

Evolution say that all life exists only to reproduce; a new theory proposes that instead of passing on genes, humans have another purpose.

Science shows that Americans -- black and white -- are more likely to mistakenly shoot a black man than a white man.