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Stem Cell Pioneers

Despite federal opposition to embryonic stem cell research, academic freedom and profits in California is luring scientists to the field

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Natural Selection

In Darwin’s Galápagos Islands, evolution is on display

Phoenix, a life-size model of a North Atlantic right whale, at the center of the new Sant Ocean Hall, 2008

A Whale Called Phoenix

A very large mammal will help tell an even weightier tale—about the ocean in this crowded, challenging century

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Letters

Readers respond to the October issue

Portrait of Charles Darwin

The Evolution of Charles Darwin

A creationist when he visited the Galápagos Islands, Darwin grasped the significance of the unique wildlife he found there only after he returned to London

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Return of the Jaguar?

Novel camera traps have documented the elusive cat in Arizona, suggesting it may not be gone from the United States after all

Sam Ogden

35 Who Made a Difference: Tim Berners-Lee

First he wrote the code for the World Wide Web. Then he gave it away

35 Who Made a Difference: Mark Plotkin

An ethnobotanist takes up the cause of rain forest conservation

35 Who Made a Difference: Douglas Owsley

Dead people tell no tales—but their bones do, when he examines them

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35 Who Made a Difference: Janis Carter

The primate who taught other primates how to survive in the wild

35 Who Made a Difference: James Watson

After DNA, what could he possibly do for an encore?

35 Who Made a Difference: John Dobson

Come one, come all. Share the sky with the father of sidewalk astronomy

Dr. Henderson a week after he received the Presidential Medal of Freedom from President Bush

35 Who Made a Difference: D. A. Henderson

Eradicating one of history’s deadliest diseases was just the beginning

35 Who Made a Difference: Wes Jackson

In Kansas, a plant geneticist sows the seeds of sustainable agriculture

35 Who Made a Difference: Robert Langridge

His quest to peer into the essence of life no longer seems so strange

35 Who Made a Difference: Richard Leakey

The leader of the Hominid Gang asks what he can do for his continent

35 Who Made a Difference: Jane Mt. Pleasant

Iroquois tradition plus Western science equals a more sustainable future

On June 18, 1983, Sally Ride became the first American woman in space as a mission specialist on STS-7.

35 Who Made a Difference: Sally Ride

A generation later, the first female astronaut is still on a mission

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35 Who Made a Difference: Clyde Roper

He’s spent his life chasing a sea monster that’s never been taken alive

35 Who Made a Difference: Daphne Sheldrick

When feelings of kinship transcend the species boundary

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