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Half of the world’s coral reefs have died in the last 30 years. The fight to save the remaining reefs just got more complicated. New research shows that even if people succeed in protecting reefs from pollution and overfishing, global…
Can zoos meet the needs of animals? Should zoos exist? For kids at the Philadelphia Zoo, in Pennsylvania, it was a close encounter of the ferocious kind. Directly in front of them was a Siberian tiger. But the kids did…
