Bacteria-laced algae are invading freshwater streams across the globe

In the small, freshwater streams of South Dakota, a horrible menace is creeping along the rockbeds. Known as rock snot, it's a form of algae that clings to rocks and spreads rapidly until it takes over the entire ecosystem of the stream, often killing off local plants and microbes. The stuff has spread from North… » 6/07/11 5:00pm 6/07/11 5:00pm

The smell of freshly-cut grass is actually a plant distress call

The lovely scent of cut grass is the reek of plant anguish: When attacked, plants release airborne chemical compounds. Now scientists say plants can use these compounds almost like language, notifying nearby creatures who can "rescue" them from insect attacks. » 8/26/10 5:02pm 8/26/10 5:02pm