The first thing to keep in mind is that ocean currents are very thin compared to the diameter of Earth. They’re only about four kilometers (13,000 feet) deep at most, and surface currents can be just ...

Ocean warming is threatening coral reefs globally, with persistent thermal stress events degrading coral reefs worldwide, but a new study has found that corals at or near the equator are affected less ...

Geodesy is the study of Earth’s shape and size, and of variations in its gravitational field. Earth was originally believed to be flat, but many clues, such as the way ships appear and disappear on ...

We use imaginary lines to help locate where a place is in the world. the Arctic Circle (the North Pole) the Antarctic Circle (the South Pole) the Tropic of Cancer the Tropic of Capricorn and the ...

Earth's now steamy Equator was covered with ice 716 million years ago, according to a new study. The finding appears to add solid evidence to the theory of an ancient "snowball Earth." The discovery ...