Scientists are embarking on a last-ditch effort to help the world's most endangered marine mammal avoid the fate of its Chinese cousin, the baiji.
Researchers in the emerging field of wildlife reintroduction battle hawks, habitat loss, and poachers to give animals a second chance.
What plunged the North Pacific
Forfeiting our commons
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President Obama's grand climate plan does not add up
Climate change can no longer be ignored
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