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two white rhinos

Two white rhinoceroses spar on a ranch in Kenya’s Laikipia District.

Karl Ammann

Two white rhinoceroses spar on a ranch in Kenya’s Laikipia District.

Karl Ammann

Two white rhinoceroses spar on a ranch in Kenya’s Laikipia District.

Karl Ammann

By clearing out vegetation, wildfires increase the vulnerability of soils to erosion and flooding.

Global fires may have doomed dinosaurs and much other life after giant meteorite struck Earth 66 million years ago

There's more to a mountain than the summit.

Two years after its big quake, Christchurch is still trembling.