'Ghost cat' declared extinct

Eastern cougar is declared extinct

Officials say native populations of the "ghost cat" have been wiped out in the eastern U.S. 

Some people disagree 

Also: 

• New 'jaguar' catfish found
• The fate of African lions  
• Rare Javan rhinos

Humans on Verge of 6th Great Mass Extinction, Experts Say

Will 75 percent of Earth's species go the way of the dodo? Are humans causing a mass extinction on the magnitude of the one that killed the dinosaurs? The answer is yes, according to a new analysis - but we still have some time to stop it.

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