The shells of chelonians—think turtles, tortoises, and sea turtles—grow in layers, keeping a time-stamped record of environmental conditions. Uranium has shown up in the layers of turtles’ and ...

Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.

When we picture sea turtles in the wild, it’s easy to envision them as armored warriors – their hard, resilient shells serving as near-impenetrable shields against oceanic threats like sharks. These ...

Grist is a nonprofit, independent media organization dedicated to telling stories of climate solutions and a just future. A new study found trace amounts of nuclear waste in sea turtles in the ...