Yale Environment 360: Weeds that resemble knee-high grass grow in planter pots in a small room at a U.S. Department of Agriculture lab just outside Washington, D.C. Light, heat, and carbon dioxide reach the plants at steady levels. For more than a month, the weeds have sustained the same conditions expected to be earths norm 35 years from now -- carbon dioxide levels equivalent to an urban traffic jam, and temperatures tipping into the dangerous zone for the planets health.
N. Burgos, University of Arkansas Red rice...