One of the most visible signs of climate change in recent years was not even visible at all until a few decades ago. The sea ice cap that covers the Arctic Ocean has been changing dramatically, especially in the last 15 years. Its ice is thinner and more vulnerable – and at its summer minimum […]
Research published last week in Science suggested that the makeup of the Earth’s lower mantle, which makes up the largest part of the Earth by volume, is significantly different than previously thought. The work, performed at the Advanced Photon Source at the U.S. Department of Energy’s Argonne National Laboratory, will have a significant impact on our understanding of the […]
LOS ALAMOS, N.M., Aug. 26, 2014—Like a protective tent over a colony of harmful bacteria, biofilms make the treatment of skin infections especially difficult. Microorganisms protected in a biofilm pose a significant health risk due to their antibiotic resistance and recalcitrance to treatment, and biofilm-protected bacteria account for some 80 percent of total bacterial infections […]
Little was known about how much mercury in the environment was the result of human activities, or how much “bioavailable” mercury was in the world’s oceans. Until now. The first direct calculation of mercury pollution in the world’s oceans, based on data from 12 oceanographic sampling cruises during the last eight years, is reported in […]