Methane

The mystery isn’t just that we see methane when we shouldn’t. It’s also that, in a sense, we see too much of it. If you want to detect life on another planet, look for biomarkers—spectroscopic signatures of chemicals that betray the activity of living things. And in fact we may have already found a biomarker. […]

Martin Koitmäe via Flickr If you look to the darkening sky after the end of a long summer day, you might see tendril-like clouds with a blueish tinge that hang at the edge of space. They appear when conditions are right, generally at latitudes close to the North or South Poles, and only when the […]

This pig farm was devastated by an explosion due to foaming. Ross Muhlbauer, Iowa State University At first, the manure was just harmlessly foaming. Only later on did things get lethal.  Nautilus Members enjoy an ad-free experience. Log in or Join now . Hog farms in the Midwest are great big barns sitting on top […]