Churches urged to back evolution By Paul Rincon BBC News science reporter, St Louis US scientists have called on mainstream religious communities to help them fight policies that undermine the teaching of evolution. The American Association for the Advancement of Science (AAAS) hit out at the "intelligent design" movement at its annual meeting in Missouri. Teaching the idea threatens scientific literacy among schoolchildren, it said. Its proponents argue life on Earth is too complex to have evolved on its own. As the name suggests, intelligent design is a concept invoking the hand of a designer in nature. It's time to...