https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. A University of Otago, New Zealand, PhD student analysing dental calculus (hardened plaque) from ancient teeth is helping resolve the question of what plant foods Easter Islanders relied on before European contact. https://phys.org/news/2014-12-dental-plaque-reveals-key-prehistoric.html Archaeology Mon, 15 Dec 2014 17:20:15 EST news337886406