Hold onto your flux capacitors, time machines have nearly arrived
“Mafia” cowbirds muscle warblers into raising their young
A new floodgate system should protect the city from high tides—unless climate change interferes
On the surprise evidence of flowing water on Mars
A son of the colonial aristocracy goes on trial for killing a poacher in Kenya, where an exploding human population is heightening tensions
Susan Solomon helped patch the ozone hole. Now, as a leader of a major United Nations report—out this month—she’s going after global warming
Little noticed by the outside world, perhaps the most dramatic decline of a wild animal in history has been taking place in India and Pakistan
Wild Things: Life as We Know It
Flying mammals, Galápagos iguanas and sidewalk songbirds
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