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Theories and Discovery

Revolutionary ideas and breakthroughs in science that have advanced our knowledge of the universe
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It is possible to see the world in a grain of sand—big chunks of the world, anyway, including the Himalayas and other mountain ranges (Elizabeth Catlos at Oklahoma State University with a piece of granite whose grains may reveal the history of Turkey’s Menderes Massif.)

Rock of Ages

Where did the world's highest mountains come from? Geologist Elizabeth Catlos takes a new view
October 2007 | By J. Madeleine Nash

Fred Spoor

The evolution scholar talks about a landmark new study challenging the classic view of human ancestry
October 2007 | By Sarah Zielinski

A group of researchers gathered data on the energy expended by four people and five adult chimps as they walked on a treadmill; the chimps walked upright and on all fours. People used about 25 percent less energy than chimps did, regardless of which style the apes walked, they report.

Walk This Way

Humans' two-legged gait evolved to save energy, new research says
July 01, 2007 | By Eric Jaffe

35 Who Made a Difference: James Watson

After DNA, what could he possibly do for an encore?
November 01, 2005 | By Smithsonian magazine

Scientists have extracted some 20,000 new biochemical substances from marine life over the past 30 years. But the hunt for drugs from the sea has only recently gone into hight gear (above, divers collect organisms from a Gulf of Mexico oil rig).

Medicine from the Sea

From slime to sponges, scientists are plumbing the ocean's depths for new medications to treat cancer, pain and other ailments
May 01, 2004 | By Kevin Krajick

Gimzewski (holding a model of a carbon molecule in his UCLA lab) uses an atomic force microscope to "listen" to living cells.

Signal Discovery?

A Los Angeles scientist says living cells may make distinct sounds, which might someday help doctors "hear" diseases
March 2004 | By Mark Wheeler

Expressions: The Visible Link

Darwin believed expressions of emotion reveal the unity of humans and their continuity with animals
June 1998 | By John P. Wiley, Jr.


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