There was a time when a trip to the zoo meant gaping at once-wild animals trapped on barren concrete ... Rick and crew quickly put a stop to all that. Built habitats across the U.S. So there ...

(Read about nature’s living fireworks—animals that bioluminesce.) If you shine a light on a comb jelly, light refracted off its moving cilia might be mistaken for bioluminescence. Their true ...

Chennai, India — His father and grandfather were camel herders, so Bhanwarlal became one too. “Our camels are an extension of our families,” says Bhanwarlal, 35, a member of the ethnic group ...