Today’s forecast: hot, with rising levels of smog, asthma and hay fever. Soaring temperatures have prompted a rash of medical alerts, amid fears that smog will choke British cities this summer. [News Source]

Experts tracking coral reef killers. Hundreds of scientists worlwide have joined forces to create standard investigation techniques for coral reef killers. [News Source]

Companies help clear the air with ‘green-cleaning’ method. A spoonful of carpet cleaner keeps the doctor away? [News Source]

China makes U-turn to embrace small, efficient cars. Today, pollution, traffic jams and a growing dependence on imported oil have forced a radical rethink that has made China an unlikely pioneer of some of the world's tightest fuel efficiency standards and stricter emissions limits. [News Source]

New federal diesel standards now in place. The EPA has just declared a massive effort to cut diesel sulfur emmisions by 97 percent. [News Source]

Ontario in the market for more nuclear reactors. Some six sites in Ontario will be considered for new nuclear reactors as the government embarks on a controversial, multi-billion dollar strategy to protect the province from future electricity shortages, sources say. [News Source]

Nuclear way of future, Ontario decides. Six sites will be considered for new Ontario nuclear reactors as the province embarks on a controversial strategy to stave off power shortages. [News Source]

Blair unveils Whitehall emissions plan. Carbon emissions from all government buildings will be "offset" by environmentally friendly measures by 2012, Tony Blair pledged yesterday as he set out to regain the political initiative on green issues. [News Source]

Ozone may make artery-clogging cholesterol stickier. Ozone can cause changes in cholesterol in the body that can trigger the formation of artery-clogging plaque, a team of U.S. chemists has found. [News Source]

As China’s auto market booms, leaders clash over heavy toll. Nearly 1,000 new cars hit the streets here every day, crowding a city already choked with pollution. Levels of nitrogen dioxide currently exceed the WHO's clean-air guidelines by 78%. [News Source]

Fowl runoff spurs fierce poultry fight. A bitter and expensive fight has festered for a decade over poultry waste in eastern Oklahoma, and it has now migrated to Washington, DC. [News Source]