A comprehensive study of more than 1,100 springs in the American West warns that critical biodiversity hot spots are facing a ...

Learn more about what fossilized teeth can tell us about the rise of mammals after the extinction of dinosaurs.

Tasmanian tigers, otherwise known as thylacines, have been extinct since 1936. The species — which looks like a strange mix ...

A Burmese python population has emerged in Southwest Florida, raising fresh concerns about the invasive predator's spread.

Scientists are increasingly worried we may be witnessing the start of the “sixth mass extinction” – the first to be caused by ...

With a bulging head that looks like it swallowed a gavel, there's no mistaking the animal: It’s a hammerhead shark. Across the globe, there are more than nine hammerhead species, many of which are ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

A conservation group is taking the federal government to court over what it says is a failure to protect habitat critical to ...

We can’t protect what we do not know, and now that we have confirmed that this other species of pangolin exists, we can use ...

Not long after the Great American Experiment began, the newly established nation set its sights west. Here's how a series of ...