A meta-analysis looked at 17 randomized controlled trials and found that exercise improved alcohol dependence and overall health in people with alcohol use disorder.
Two of the more than 6,000 Maya structures archaeologists recently discovered in Mexico's Yucatán Peninsula include an astronomical observatory and a pyramid.
Astrobiologists planted garden cress seeds and cultured dishes of photosynthetic bacteria under lights designed to simulate the light of a star called a K-dwarf.