More than half of America’s extended continental shelf – 200,900 square miles – stretches in a large wedge north of Alaska toward the Arctic Ocean, including an area that overlaps with Canadian claims ...

BEIJING -- A new study has revealed that human activities and climate change are accelerating the release of mercury from the world's largest marine mercury reservoir -- continental shelf sediments.

If you liked this story, share it with other people. For the first time ever, scientists have had help from sea lions in mapping the ocean floor. And the marine mammals have done their job well, ...