Deep within Earth’s mantle lie two enormous regions, often referred to as "islands," which are the size of continents.

A stunning compilation of views of Earth from the Tiangong space station. Credit: Space.com | footage courtesy: China Central Television (CCTV) | edited by Steve Spaleta Music: Mars Adventure by Brend ...

Israel’s Cease-Fires in Lebanon and Gaza Appear Fragile Israeli forces killed at least 15 people and injured dozens more in southern Lebanon on Sunday, Lebanese officials said. In Gaza, Israel ...