ScienceMississippi Floods May Have Wiped Out Ancient North American Civilization Researchers had long thought that the prehistoric city of Cahokia was destroyed by drought - but as new evidence shows, the civilization may have collapsed as a result of too much water, not too little.by Jim Algar
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Science'Breaking Bad' Syndrome: Most Acts of Violence Are 'Virtuous' and 'Morally Necessary'by Jim Algar
ScienceDNA found in early modern human fossil shows evidence of interbreeding with Neanderthalsby Jim Algar
ScienceCanoe lost for six centuries, wind pattern study are clues to Polynesian seafaringby Rebecca Kaplan