Scientists have discovered the world's largest asteroid impact zone

March 24, 2015 4:05 AM

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Scientists have discovered the world's largest asteroid impact zone

For 14 years, John Hargrove was living his dream as an orca trainer, but once he became disillusioned by what he saw behind the scenes, he left the business. He’s now sharing his experiences in a new book, Beneath the Surface.

"I saw the devastating effects of captivity on these whales and it just really became a moral and ethical issue," he told NPR's Fresh Air. Watching calves leave their mothers was upsetting, he said, and SeaWorld "tries to be clever with semantics" by "redefining the word 'calf' by saying a calf is n...

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