NATURE interviews Romulus Whitaker, the reptile expert and conservationist featured in "The Dragon Chronicles."

Conservationist Rom Whitaker searches for the last of the supersize crocodiles among the titans of the croc world: Nile crocodiles, saltwater crocodiles, and gharials.

Hunting and egg harvesting nearly brought green sea turtles to the brink.

Nearly a third of parrots worldwide are threatened -- a statistic three times greater than the threat to all bird species.

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.

Ecologists once thought ecosystems were largely influenced from the bottom up, but predators can also be the drivers of the system.

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?

In the 1970s, the pollock industry in Alaska expanded to become the largest fishery in the world, just as sea lions began to disappear -- a smoking gun?