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

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 ...

Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...