Ecosystem (noun, “EE-koh-sis-tem”) An ecosystem is a network of living and nonliving things interacting in the same place. The living things in an ecosystem could include animals, plants and microbes.…

One ancient type of wasp appears to have had an especially freaky way to trap prey 99 million years ago. It used a mouth-like structure on its backside, fossils now…

When rain or snow falls, much of it seeps into the soil. From there it flows down through porous rock, gravel and sand, forming underground streams. This groundwater will sometimes…

Chaco Canyon was once the heart of a lost civilization. People began building grand structures there around A.D. 850, in what is now northwest New Mexico. Within 300 years or…

Bad news, earthlings. Computer models of the solar system’s future reveal a new risk facing us all. The gravitational tug of a passing star could cause another planet to smack…

Quasi-satellite (noun, “QWA-see-SAT-el-lite”) A quasi-satellite is a space object — such as an asteroid — that appears to orbit a planet like a true satellite. However, the object lies beyond…

A new air-powered robot can practically walk right off the 3-D printer. The soft, 3-D printed robot doesn’t have any electronic parts. All it needs to move is an air…

Columbus, Ohio — Preserving threatened coral reefs is no longer enough. Now, we must help build new ones, say Ja Young Kim, 17, and Jiho Kong, 19. They’ve just designed…