Global Climate Change on Venus
Venus's climate, like Earth's, has varied over time-the result of newly appreciated connections between geologic activity and atmospheric change
Volume 280, Issue 3
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Features
A Little Big Bang
A new collider will soon create matter as dense and hot as in the early universe
The Timing of Birth
A hormone unexpectedly found in the human placenta turns out to influence the timing of delivery. This and related findings could yield much needed ways to prevent premature labor
The Crash in the Machine
Increasingly, automakers are relying on computer simulations of accidents to develop safer cars more quickly and efficiently
The Metamorphosis of Andrei Sakharov
The inventor of the Soviet hydrogen bomb became an advocate of peace and human rights. What led him to his fateful decision?
Visualizing Human Embryos
A technique called magnetic resonance microscopy is revealing the secrets of early human development
The 1998 National Medal of Technology
The Komodo Dragon
On a few small islands in the Indonesian archipelago, the world's largest lizard reigns supreme