Live Science: Microbes living in Antarctica's saltiest lake swap huge chunks of genetic material as a means of surviving their harsh environment, a new study finds. The single-celled organisms, called haloarchaea for their salt-loving ways, are biologically distinct from bacteria, algae and other tiny creatures that can thrive in extreme settings. Their Antarctic home is a deep lake in the Vestfold Hills severed from the ocean more than 3,000 years ago. Appropriately named Deep Lake, the basin sits 50 meters...