Md. bus fleets will go cleaner and greener. As commuters turn to public buses to combat rising gas prices, passengers in Maryland can look forward to a cleaner, quieter and more fuel-efficient ride. [News Source]

Children’s hospital researchers study asthma in Pittsburgh. Children's Hospital of Pittsburgh is one of only two sites in the nation on the front lines of battling severe asthma. Experts want to understand why kids who are severe asthmatics don't respond to treatment. [News Source]

Salem power plant makes its plans known. The owners of Salem Harbor Station say they’re here to stay and have a plan to live up to state regulations – although environmental activists have their doubts. [News Source]

Senators want Johnson to step down. On July 29, four Democratic Senators called for the resignation of EPA Administrator Stephen L. Johnson and asked the U.S. attorney general to investigate whether Johnson lied to Congress. [News Source]

NGO plans to curb traffic in city. A seven-year-old proposal for traffic restraint scheme for Mumbai city-which adds 400 new vehicles on its roads every day- has now come up before Bombay high court. [News Source]

Beijing smog ‘a blessing in disguise.’ Australian Olympic team medical director Peter Baquie says the Beijing smog presents no danger to the team and has in fact helped reveal closet asthma sufferers. [News Source]

Beijing air quality improves. Beijing's pollution levels dropped yesterday to less than half of the previous day's, the lowest reading since authorities began pulling cars off the road and shutting down factories to address athletes' concerns about air quality ahead of the Olympic Games. [News Source]

Pollution scare ahead of Games. Sky News has discovered that, just days before the Olympic Games start, levels of pollution in Beijing are up to 17 times higher than in London. [News Source]

Haze returns to Beijing as China unveils pollution back-up plan. China unveiled a string of potential last-ditch measures to battle the city's defiant smog ahead of the Olympics, as Beijing was again shrouded Thursday in a cloak of haze. [News Source]

China unveils emergency pollution plans for games. China has announced a slew of emergency measures in and around Beijing in case air pollution remains poor during the Olympics, including taking more cars off the roads and slashing production at more than 220 factories. [News Source]

Is Beijing’s air safe? Beijing has vowed the Olympic Games will take place under blue skies, not the murky "sauna" haze that has shrouded the city recently, but even on apparently clear days pollution levels may not be safe for athletes. [News Source]