An archaeologist at the University of Liverpool is examining more than 1,000 Roman silver coins from museums around the world in order to establish their true economic value.
In a simple world rivers would flow in straight lines, every airplane ride would be smooth, and we would know the daily weather 10 years into the future. But the world is not simple -- it is turbulent.
Boston University researchers have discovered the remnants of the largest crater of the Great Sahara of North Africa.
Officials in the Bahamas said 10 birds that some believed to have died from bird flu could not be tested for the virus.
England's butterflies are increasingly at risk, with the number of farmland butterflies declining by 30 percent over the last 10 years, a study finds.