Radioactive spike found in Pacific seabed samples. It could be from space radiation or changes in ocean currents 10 million ...

The photo has been changed so we can see all of the earth’s surface in one picture. The Pacific Ocean is the world’s largest ocean. It covers about a third of the Earth. The Pacific Ocean ...

Under the Pacific Ocean, hidden material was discovered in Earth's mantle ... waves to reach various seismic stations around the globe in order to uncover details about rock density and stiffness.