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Software helps a conservation group see where shade trees will best cool a river. Then the hard work starts.

Brian Owens, Contributor

Finding may revise estimates of forests’ carbon-capturing prowess.

Gabriel Popkin, Contributor

Elephants bring tourists and tourists bring money.

Joel Shurkin, Contributor

Large brains used to be an advantage, then humans happened.

Charles Q. Choi, Contributor

Study challenges claim that sanctioned wolf killing curbs poaching.

Marcus Woo, Contributor

Stopping feral cats from overrunning the landscape and killing threatened species requires new tools.

Katharine Gammon, Contributor

A hospital for rehab, research and release of one of Earth’s oldest living animals.

Marsha Lewis, Contributing Producer

Two new studies suggest rising populations for famous predators.

Peter Gwynne, Contributor

Population crisis tests National Park Service's policy to avoid human intervention.

Joel Shurkin, Contributor

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