For the first time, scientists have figured out where we sit on the global food chain. Although humans are clearly top chefs of the world, we're not the top predator. Instead, our ranking is closer to a small, smelly fish that we put on pizzas and salads.
December 6, 2013 That difference translates to about $550 a year, according to a new meta-analysis of studies evaluating the retail costs of food, grouped by healthfulness. It's chump change for middle-class eaters, but a big gap for low-income families. Researchers say that's a problem that can be solved.
December 6, 2013 The only person known to have been cured of AIDS got a bone marrow transplant, so when two AIDS patients in Boston appeared to be free of the virus after transplants, scientists hoped they were cured, too. But the HIV virus has returned in both.
December 3, 2013 To forecast sudden global catastrophe — and, perhaps, head it off — we should be spying on the climate at least as closely as we spy on each other, an expert panel warns. Yet the primary global monitoring network has been cut by 30 percent.
December 3, 2013 The space agency has announced plans to grow turnips, basil and cress on the moon by 2015. The experiment could be good news for astronauts sick of their freeze-dried fare. But researchers say the real goal is to see if humans could one day live — and farm — on the moon.