Some harlequin frogs have lost their poison—and their ability to defend themselves. Scientists are on the case.

Thomas Mulligan examines the potent neurotoxins of the blue-ringed octopus to reveal how such a small creature can pose a ...

This small, cute looking creature is one of the most dangerous animals in the ocean. It hides on shallow reefs, blending into its surroundings. While snorkeling or walking near the shore, you might ...

The wonders of the Galápagos Islands never cease. The region, known for amazing species such as giant tortoises and diving iguanas, has offered up a new marvel. Miles beneath the waves, cameras ...