Schoolchildren have long been taught that Earth’s composed of four main layers: the crust, the mantle, the outer core, and the inner core. But a new study suggests their textbooks may be incomplete.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A University of Toronto team created an algorithm to organize telescope data to weed out interference.

Algorithm maps clicks and buzzes Until now, the best way to learn about the hunting patterns of narwhals has been to collect acoustic data using measuring instruments attached to their bodies. Like ...