"British fish stocks have dropped by 94 percent in the past 118 years and commercial fishing has profoundly changed seabed ecosystems, leading to a collapse in numbers of many species, scientists said on Tuesday."

"Insecticides such as DDT have long been used to combat the scourge of malaria in the developing world. But with the disease parasite becoming increasingly adept at resisting the chemical onslaught, some countries are achieving striking success by eliminating the environmental conditions that give rise to malarial mosquitoes."

"Wal-Mart Stores Inc. has agreed to pay $27.6 million to settle allegations that it improperly handled and dumped hazardous waste at stores across California in a case that led to changes in the retailer's practices nationwide, prosecutors said Monday."

"If U.S. officials had followed up on a 1994 response plan for a major Gulf oil spill, it is possible that the spill could have been kept under control and far from land. The problem: The federal government did not have a single fire boom on hand."

"For 100 years, Mexico City has flushed its wastewater north to irrigate the farmland of Hidalgo State. This foul cascade, which the farmers call 'the black waters,' flows through a latticework of canals and then trickles over the fields. So when word got out that the government was finally going to build a giant wastewater treatment plant, one might have expected the farmers around here to be excited. Instead, they were suspicious."

"Anti-drilling Democrats pledged on Tuesday to block any climate and energy bill that would pave the way for new oil and gas drilling off the coasts of the United States, stepping up the heat on what was already a contentious issue in the Senate debate."

"In a closed-door briefing for members of Congress, a senior BP executive conceded Tuesday that the ruptured oil well in the Gulf of Mexico could conceivably spill as much as 60,000 barrels a day of oil, more than 10 times the estimate of the current flow."

"The Interior Department exempted BP's calamitous Gulf of Mexico drilling operation from a detailed environmental impact analysis last year, according to government documents, after three reviews of the area concluded that a massive oil spill was unlikely."

"The Environmental Protection Agency on Tuesday proposed the nation's first federal rules for the disposal of contaminant-laden ash from coal-fired power plants, but delayed a decision for at least three months on whether coal ash should be regulated as a hazardous substance."

The $2 billion in federal stimulus money was welcomed in southeastern Washington, where the government has been working for decades to clean up the Hanford nuclear complex. But newly hired workers on the project may be facing dangers because of inadequate training and precautions for the threat of deadly beryllium dust.