Genes of a Lost South American People Point to an Unexpected History

Life Unlikely: Meteorite From Mars Indicates Limited Water Circulation Late in the History of the Red Planet

Ancient Genes Reveal Early Farmers' Origins as More Complicated Than We Thought

In a recent issue of American Antiquity, two articles perpetuate the common misconception that dietary carbohydrates are an essential component of the human diet and that plants—the main source of dietary carbohydrates—must be consumed to promote health. In fact, carb is a nonessential macronutrient