HumansMedieval dental plaque suggests women played important role as scribes A rare blue pigment found in a medieval woman's teeth adds to the idea that many scribes at the time were women News
EarthHow a janitor wowed Darwin by solving the ice age mystery Self-educated ice sage James Croll cracked the conundrum of why Earth periodically freezes over. He was feted in his time, so why did the world forget him? Features