"The Philadelphia Water Department announced yesterday that it is enhancing its testing procedures and reviewing treatment technology after federal environmental officials found radioactive iodine in the city's drinking water."

"Several Democratic senators said Tuesday that the Environmental Protection Agency should step up regulation of the natural gas industry because they are concerned that toxic chemicals used in drilling could enter the public water supply."

High prices for agricultural crops are driving farmers to plant more acres. Some of that land had been previously held back from planting because it is highly erodible. Changing weather patterns and inadequate enforcement of erosion protections are making things worse.

"Japanese officials struggled through the day on Tuesday to explain why it had taken them a month to disclose large-scale releases of radioactive material in mid-March at a crippled nuclear power plant, as the government and an electric utility disagreed on the extent of continuing problems there."

"In negotiating the budget deal that averted a government shutdown, Democrats and the White House claimed a big victory in preventing Republicans from blocking a set of environmental regulations. But as details of the compromise became known Tuesday, it was clear Republicans had won deep reductions in spending at the Environmental Protection Agency."

"New Jersey Governor Chris Christie is re-evaluating the state's participation in a regional carbon trading program and could opt to withdraw within a few weeks. Observers say the move is expected in response to pressure from GOP legislators and campaigns mounted by groups funded by billionaires Charles G. and David H. Koch."

"Firefighters battled Monday to contain several large blazes that have burned hundreds of square miles of rural Texas and destroyed dozens of homes since last week, getting reinforcements from out of state as they struggled against some of the worst wildfire conditions in state history."

"Indoor marijuana cultivation consumes enough electricity to power 2 million average-sized U.S. homes, which corresponds to about 1 percent of national power consumption, according to a study by a staff scientist at the Lawrence Berkeley National Laboratory."

"Two areas of Alaska's Cook Inlet will be designated as critical habitat for the endangered Cook Inlet beluga whale, NOAA's Fisheries Service, Alaska Regional Office announced [April 8]."