Snails have over 1,000 microscopic teeth. Some eat leaves, but different snails eat many different things, including other snails. Photo by Jennifer Schlick Of all the flora and fauna in the region, ...

Since 1990, the St. Louis Zoo has played an instrumental role in bringing Tahitian snails back from the brink of extinction. Few species that have gone completely extinct have been successfully ...

We know whether the endangered Everglade snail kite becomes more or less so every few hours. At least we do at Lake Tohopekaliga. A research team is always counting. They use GPS trackers, nest ...

Don't miss the big stories. Like us on Facebook. The story I'm about to tell became much more interesting once I invited a zoologist into the narrative. Yet, this tale wouldn't have come around if I ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet initiative has ...