Scientists have discovered a new phylum of microbes in the Earth’s Critical Zone, deep soil layers that help purify groundwater ... during its evolutionary history. A diagram showing the evolutionary ...

Humankind will soon lose a great deal of vigilance over the ozone layer, which shields life on Earth from harmful solar radiation. The impending loss of NASA’s Aura and the Canadian Space Agency ...

Scientists have always been curious about the atmosphere surrounding us, but in the past, they could not just hop on a spaceship to see what was up there. Instead, scientists hiked up high ...