Threatened species, but there's still hope
New scientific evidence suggests that a growing number of creatures could disappear from the earth. One-fifth of the vertebrates and as many as a third of all sharks and rays are now threatened with extinction.
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International fisheries officials adopted new protections in the Atlantic Ocean for the oceanic whitetip, shown here, whose numbers have declined by as much as 99 percent in some areas.
Matt Fidler /
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