By Barbara Kessler

Polar bears, penguins, pandas have become symbols of the fight to save wild places around the world and push back global warming.

According to conservationists meeting in Barcelona this week, they have a host of company. A broad assessment of the world’s mammals reveals an “extinction crisis” with nearly one-quarter of known mammal species at risk of disappearing forever due to habitat loss, pollution, global warming, over-hunting and food chain erosion.

The study, unveiled at the International Union for Conservation of Nature (IUCN) World Conservation Congress, shows that 1,141 (and possibly nearly 2,000) of the world’s 5,487 mammals are known to be threatened with extinction.

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