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Researchers who study the friendly bacteria that live inside all of us are starting to sort out who is in charge—microbes or people?
Learn about the bacteria, fungi and other micro-organisms that maintain human health.
On the road to unlimited energy, the world's most complex science experiment encounters a few potholes
Orchid pollinators are surprisingly promiscuous about the plants they like
How orchid bees concoct their own special scents to woo the ladies
The largest stars die in explosions more powerful than anyone thought possible—some triggered in part by the production of antimatter
Most errors are quickly forgotten. Others end up remaking the face of science
Like people, hermit crabs and other animals trade up by treasuring what others leave behind
Hermit crabs have evolved sophisticated social strategies to exchange resources so that everyone benefits
Building a vast digital simulation of the brain could transform neuroscience and medicine and reveal new ways of making more powerful computers
Thumbi Ndung'u has moved from Africa to Massachusetts and back in a quest to halt the AIDS epidemic
By concocting bird flu viruses that could potentially spread easily among humans, researchers have ignited a debate about the need for safety versus open inquiry
The Future of Energy
The race is on to reinvent the energy landscape. From mini nuclear reactors to better geothermal and from cleaner internal combustion to biofuels, the field has its established favorites—and plenty of long shots.
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