August 24, 2013 One of seven large mirrors for the 72-foot telescope will be spun cast at the University of Arizona on Saturday.
August 23, 2013 Climate skeptics point to 15 years of no warming trend as a reason to doubt global warming. But Kevin Trenberth at the National Center for Atmospheric Research can explain a good bit of that temperature plateau — and he argues the Earth has continued to warm appreciably, even though our thin blanket of atmosphere hasn't.
August 23, 2013 Travelers can tell you that getting a glimpse into another person's culture can help erase ethnic prejudices. A laboratory experiment found that to be true, but only if people feel that they have a choice in the matter.
August 23, 2013 What happens if you take a beach creature, a little worm, or an oyster, and move it to an aquarium far from the sea? Will it still imagine tides? Yes, it will. But whose tides will wake it up every day, get it moving? The tides back home? Or the tides — even if there aren't any — in its new time zone? A puzzle.
August 23, 2013 So far, the Atlantic has been hurricane-free, but one forecaster points out that similar years in the past have had very active second halves.
August 23, 2013 The study randomly assigns preemies to one group that will get blood transfusions when their anemia is relatively mild or another that won't get them until the anemia is severe. Researchers want to see which approach is better at reducing deaths and brain damage. Critics say the doctors haven't leveled with parents about the risks.