What Causes the Smell After It Rains?

There are three primary sources of smells that commonly occur after rain. The first, the "clean" smell, in particular after a heavy thunderstorm, is caused by ozone. Ozone (scientifically known as trioxygen due to the fact that it is comprised of three oxygen atoms) is notably pungent and has a very sharp smell that… » 5/27/14 11:20am 5/27/14 11:20am

4 Ways Tiny Microbes Changed Life on Earth Forever

This is the microbes' world—we just live in it. Throughout the history of Earth, microbes have radically reshaped life on the planet, from creating the very air we breath to wiping out almost all life on Earth. Don't underestimate the power of tiny, tiny microbes populating the Earth trillions of times over. » 4/07/14 12:00pm 4/07/14 12:00pm

Scientists See Star Blasting a Planet for the First Time Ever

Imagine you're outside, walking happily on a beautiful sunny day. Suddenly, the light gets intense. You look up, and see a bright flash filling everything. Seconds later, a powerful wind starts pushing the clouds out of view at hypersonic speed. Buildings, trees, and people fly away, disintegrating into a billion… » 6/28/12 1:00pm 6/28/12 1:00pm

Frenchman Plummeting 25 Miles From The Sky Will Break Sound Barrier,…

Michel Fournier is about to make the greatest leap of his, and anyone else's, life. On Sunday, the 64-year-old retired French army officer will fly almost 25 miles into the sky in a giant balloon, step out of a pressurized capsule and plunge headfirst towards the earth, soaring through the atmosphere for an estimated… » 5/24/08 9:00pm 5/24/08 9:00pm