Scientists say they have uncovered new clues in Australia about when plate tectonics began on Earth, the only known planet to have the geological process.

"Auld Lang Syne" as we know it today first came together in the late 1700s, and wasn't initially a song for New Year's Eve. Here's what it means and how it became a popular holiday song in the U.S.

Negotiators from EU countries and the European Parliament have agreed on new safeguards for imported agricultural products under the pending Mercosur free trade agreement, despite persisting divisions over the approval of the deal with four Latin American countries. The controversial free trade deal is intended to boost trade between the European Union and the four Mercosur countries — Brazil, Argentina, Uruguay and Paraguay — but is still viewed critically by some in the EU.