In the past 540 million years, the Earth has endured five mass extinction events, each involving processes that upended the normal cycling of carbon through the atmosphere and oceans. Read full report.
News and Updates
Nora Rothrock couldn't believe her eyes as she watched the tan-coloured beast from her window in Hampstead, north London, last week. She took a snap of the big cat and send it to the Natural History Museum, where experts are now trying to work out what kind of animal it is. Read full report.
The snow leopard is no longer an endangered species, but its population in the wild is still at risk because of poaching and habitat loss, conservationists said this week. Read full report.
A mountain lion roaming a Los Altos resident’s backyard was caught on surveillance camera Thursday, police said. Read full report.
Video of a endangered wild jaguar released Thursday shows a big cat that was first photographed by a trail camera late last year. Dubbed "Sombra" by Tucson schoolkids, the jaguar was captured on tape in the Chiricahua Mountains this summer. Read full report.
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