Hunting and egg harvesting nearly brought green sea turtles to the brink.
With the red knots around for only a few weeks, these researchers have a limited window for collecting data.
In 1963, there were fewer than 500 bald eagle breeding pairs in the lower 48 states. Click around these interactive maps to find out how many pairs there were from 1990 to 2000.
Of all the troglobites, it is perhaps the olm that is the star. Troglobites are built to survive in the dark cave systems below the earth's surface.
Frustrated fishermen captured video of killer whales thrashing at sea lions in a harbor. Are fisheries being wrongly blamed?
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