The Electronic Nose
Can't tell a Chateau Margaux '82 from an '84? Can't stop worrying whether you turned off the gas? Get a new nose. On a chip.
by Gary Taubes
The Last Great Impact on Earth
In 1908 hundreds of square miles of Siberian forest were flattened and burned by a mysterious fireball. Only now, nearly nine decades later, are we learning what really happened--and not a minute too soon.
Hormone Hell
Industrial chemicals can mimick natural hormones and wreak havoc in developing animals.
First, Kill the Babies
In the fierce evolutionary battle to pass on one's genes, says one controversial hypothesis, everyone else is a potential competitor--even the infants.
Travels of America
Half a billion years ago, a large chunk of North America went missing. That chunk has now turned up in the Andes of Argentina.