Fountains of Youth: Early Days in the Life of a Star
To make a star, gas and dust must fall inward. So why do astronomers see stuff streaming outward?
Volume 283, Issue 2
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Features
Form from Fire
Self-propagating heat waves can engender new and improved materials, but only recently have researchers found ways to monitor these ultraquick chemical reactions
The Universe's Unseen Dimensions
The visible universe could lie on a membrane floating within a higher-dimensional space. The extra dimensions would help unify the forces of nature and could contain parallel universes
Male Sexual Circuitry
Birth of the Modern Diet
Ever wonder why dessert is served after dinner? The origins of modern Western cooking can be traced to ideas about diet and nutrition that arose during the 17th century
Is Global Warming Harmful to Health?
Computer models indicate that many diseases will surge as the earth¿s atmosphere heats up. Signs of the predicted troubles have begun to appear.