More than 2,000 former NFL players team up in a lawsuit alleging that the league concealed brain injury risks. Lawyers for the former players say they want to consolidate more than 80 pending lawsuits with a “master complaint” that was filed today in federal court in Philadelphia. The plaintiffs hope to hold the NFL responsible for the care of players suffering from dementia, Alzheimer’s disease and other neurological conditions. The suit accuses the NFL of negligence and intentional misconduct, and says the pro football league was guilty of “mythologizing” and glorifying violence through the media, including its NFL Films division. The Associated Press, Los Angeles Times

Study says CT scans in children can increase the risk of leukemia and brain cancer. According to the researchers, the increased risk is significant but small. They say the test should be performed only when necessary, and with the lowest possible dose of radiation. CT, or computed tomography, scans take X-rays from various angles and combine them to create cross-sectional images, and they involve much more radiation than traditional X-ray techniques. Concern about potential harm from the scans has grown as their use has climbed steeply. At least four million children a year receive scans in the U.S., and researchers estimate that a third of the scans are unnecessary or could be replaced by safer tests. The New York Times

United Nations report warns of irreversible damage to the environment. In its most comprehensive assessment of the global environment in five years, the UN painted a grim picture. It said nations are making “significant” progress on just four of 90 environmental goals, with little progress in tackling climate change, replenishing fish stocks or stopping deserts from spreading. “The world continues to speed down an unsustainable path,” the UN said. “The moment has come to put away the paralysis of indecision.” The UN is calling on nations to redouble efforts to meet climate and sustainability targets two weeks before it hosts an environmental conference in Rio de Janeiro. Bloomberg, The Associated Press, Reuters

Mercury emissions from China tainting North America’s Great Lakes. Researchers say 14 percent of the mercury from manmade sources found in the Great Lakes is coming from China. That is second only to the U.S. which accounts for 32 percent. But while U.S.-generated mercury pollution in the basin is dropping, the volume from China is rising. Much of the mercury from China comes from burning coal to produce electricity. “Mercury is known to be a pollutant capable of long-range atmospheric transport and it is not surprising that some of the mercury emitted in China and elsewhere around the world ends up in the Great Lakes,” said a National Oceanic and Atmospheric Administration scientist. Great Lakes Echo

Federal safety regulators propose $193,400 in fines against three Pennsylvania contractors. The U.S. Occupational Safety and Health Administration accused the contractors of safety violations in connection with the construction of a field house at Kimball Union Academy, a boarding school in Meriden, N.H. The main target of the investigation was JDE Inc. of Souderton, Penn., the project’s general contractor. It was accused of four willful violations, OSHA’s most serious charge, for allegedly failing to ensure that the concrete foundation was structurally sound and the structural steel was constantly stable during construction. OSHA said that exposed workers to the risk of being crushed. OSHA

Recalls: Introvale birth control pills, 2009 Kia Borregos, 2013 Scion FR-S and Subaru BRZ sports cars, Nautilus Bowflex dumbells, Safeway Select lasagnaDigestive Health 3 in 1 dietary supplements

Compiled by Stuart Silverstein

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