Monroe County gets ‘F’ for air pollution levels (Rochester Democrat and Chronicle) Monroe County's downgrade by the American Lung Association reflects the Environmental Protection Agency's stricter air pollution standards. [News Source]

Hamilton County Gets An F In Air Pollution (WDEF Chattanooga) Hamilton County receives an F for air pollution according to the American Lung Association's lastest report. read more [News Source]

Air Pollution High in California Cities (MedicineNet.com) Title: Air Pollution High in California Cities Category: Health News Created: 4/30/2009 Last Editorial Review: 4/30/2009 [News Source]

Gallatin County earns ‘F’ in new air pollution study (Bozeman Daily Chronicle) Gallatin County was one of four Montana counties to earn an “F” for periodic spikes in particulate air pollution in recent years. [News Source]

Unhealthy air pollution levels in the U.S. (The World) LOS ANGELES (AP) - Sixty percent of Americans live in areas with unhealthy air pollution levels, despite a growing green movement and more stringent laws aimed at improving air quality, the American Lung Association said in a report released today. [News Source]

186m in US live with dangerous air pollution (The Times of India) WASHINGTON: Six in 10 US residents -- more than 186 million people -- live in areas with dangerous levels of air pollution, reports the American Lung Association. [News Source]

Judge blocks part of ports’ clean-truck program. In a victory for independent truckers, a federal judge on Wednesday blocked part of a program to cut diesel emissions by phasing out 17,000 old big rigs at the nation's busiest port complex. [News Source]

W.R. Grace trial case winding down. Defense lawyers in the W.R. Grace & Co. trial intend to call their final witness next Wednesday, according to the company's lead attorney, who hopes to hand the case over to jurors soon after. [News Source]

Barack Obama’s 100 days: Green measures. Barack Obama promised on his very first day in the White House to help move America towards a new green future. Now, 100 days on, environmentalists in general have been impressed by the speed and sheer sweep of Obama's efforts. [News Source]

BLM, Forest Service sued over air pollution in San Juan Basin. Environmentalists are taking aim again at the U.S. Forest Service and the Bureau of Land Management, accusing the agencies in a lawsuit of failing to curb air pollution in the San Juan Basin — one of the largest natural gas fields in the nation. [News Source]

Scientists struggle to understand swine flu virus. Much remains unknown about the new flu virus—most notably how lethal it is and why it seems much deadlier in Mexico than anywhere else. American health officials believe they are getting closer to answering those questions, or at least to ruling out wrong-headed theories. [News Source]