Carrie Kahn

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Cubans really thought that their long era of economic isolation from the United States was over.

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In Mexico, the race is on to save a small, gray porpoise that is on the brink of extinction. It's called the vaquita, which is Spanish for "small cow."

Scientists believe only 30 remain in the warm, shallow waters of the Gulf of California, between Baja California's peninsula and mainland Mexico — the only place they live in the world.

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