This noctilucent cloud video is the perfect vacation for your brain

Noctilucent clouds are some of the most poorly understood meteorological phenomena on Earth. High-hanging and electric-blue in hue, the ethereal, night-shining formations feature prominently in this beautiful film by photographer P-M Hedén. » 8/13/13 1:20pm 8/13/13 1:20pm

Bacteria and fungi living 30,000 feet above the Earth could be…

Microorganisms have been found in virtually every corner of the Earth, from deep sea volcanoes to the tops of frozen mountains. They've also been discovered high up in the atmosphere — but scientists haven't been entirely sure as to nature and extent of these elusive high-altitude organisms. Now, new research suggests… » 1/29/13 8:31am 1/29/13 8:31am

NASA confirms there's helium in the Moon's atmosphere. But where did it…

When astronauts from the Apollo 17 mission landed on the Moon in 1972, one of their mission objectives was to analyze the tenuous atmosphere using the Lunar Atmosphere Composition Experiment, a mass spectrometer (with a shape and appearance weirdly reminiscent of a modern day printer/scanner combo) designed to detect… » 8/17/12 4:13pm 8/17/12 4:13pm

The first land plants pretty much ruined the entire planet

The first, moss-like plants emerged on land about 470 million years ago. In just 25 million years, they stripped the planet of vital minerals, wrecked Earth's carbon cycle, started an ice age, and caused a mass extinction of marine life. » 2/01/12 12:52pm 2/01/12 12:52pm