Paul Ehrlich’s dire predictions of the effect of a burgeoning world population never came to pass. Or maybe, he says, they simply haven’t yet.

Economic, financial and industrial downturns are causing international distress; the prescribed cure creates its own set of debilitating consequences.

Skeptics question if building cities, removing forests and increasing the carbon dioxide content of the atmosphere matter in the big picture of life on earth.

The prophet Isaiah wrote of a time when instruments of war would be turned into implements for farming. But today, the opposite occurs far too often.

In 1996 energetic brain scientist Jill Bolte Taylor had a stroke. Her recovery took eight years, but it was anything but time lost.

After about two months of Martian days on the surface, NASA’s Phoenix robotic lander is well down the road to completing several important aspects of its mission.

If new stem cells could be grown in the lab, could a patient’s cells be cloned and used to replace or repair his degenerative disease?

How much would you pay to know what thoughts are swimming around in someone else’s head? And if you could really know their truthfulness how much more would you pay?

NASA’s robotic spacecraft Phoenix’s Martian mission is to look for evidence of organic molecules and the history of a habitable environment in the planet’s past.

Until recently it was generally thought that we are incapable of producing new brain cells after early childhood.