Whose Blood is it Anyway?

Blood collected from umbilical cords and placentas-- which are usually thrown away following birth--contains stem cells that can rebuild the blood and immune systems of people with leukemia and other cancers

Violent Pride

Do people turn violent because of self-hate, or self-love?

The Fury of Space Storms

Shock Waves From The Sun Can Trigger Severe Turbulence In The Space Around The Earth, Endangering Satellites And Astronauts In Orbit. Now a New Spacecraft Is Showing How Space Storms Develop

Seeds of Concern

Are genetically modified crops an environmental dream come true or a disaster in the making? Scientists are looking for answers

Life's Rocky Start

Air, water and rock were the only raw materials available on the early earth. The first living entities must have been fabricated from these primitive resources. New experiments suggest that minerals the basic components of the rocks could have played starring roles in that dramatic feat.

Does the World Need GM Foods? No.

Two leading figures in the debate over genetic engineering defend their stances

Does the World Need GM Foods? Yes.

Virtually There

Three-dimensional tele-immersion may eventually bring the world to your desk

The Risks on the Table

More than half the foods in U.S. supermarkets contain genetically modified ingredients. Have they been proved safe for human consumption?