A new open-access database of biosignatures has been designed to help astronomers map which alien planets may be capable of supporting life. It catalogues colors that reflect from 137 microbe species, a brilliant range "from the egg-yolk yellow of Halorubrum chaoviator" to "the deep blue-green of Dermocarpa violacea."…

A microbe found in a grassy field appears to contain a remarkably powerful antibiotic. Called teixobactin, it kills dangerous pathogens without any observable resistance (at least not yet). Moreover, it destroys many types of drug-resistant bacteria and it's safe in mammals. Its use may be limited, but it could…