From phage therapy and cancer killers to drivers of human evolution, viruses do a lot to benefit the world. ...read more
A new way to count the number of intelligent ET cultures suggests we are far from alone; but also that we may never be able to find them, astronomers say. ...read more
This 7,000-year-old stone circle tracked the summer solstice and the arrival of the annual monsoon season. It's the oldest known astronomical site on Earth. ...read more