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
Volume 284, Issue 4
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Features
Seeds of Concern
Are genetically modified crops an environmental dream come true or a disaster in the making? Scientists are looking for answers
Does the World Need GM Foods? No.
Two leading figures in the debate over genetic engineering defend their stances
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.
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
Violent Pride
Do people turn violent because of self-hate, or self-love?
Virtually There
Three-dimensional tele-immersion may eventually bring the world to your desk
Does the World Need GM Foods? Yes.
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?