"BAGHDAD -- Iraq's Oil Ministry says crude oil exports have averaged 2.565 million barrels a day in August, the highest level in more than three decades."

"More than 20,000 high-temperature records have been broken so far this year in the United States. And the heat is especially bad in cities, which are heating up about twice as fast as the rest of the planet."

"A new management plan for the Giant Sequoia National Monument further limits logging in and near groves of the world's largest trees, but would still allow it in nearly a quarter of the monument."

"The U.S. Justice Department is ramping up its rhetoric against BP PLC for the massive 2010 oil spill in the Gulf of Mexico, describing in new court papers examples of what it calls 'gross negligence and willful misconduct.'"

"With the worst drought in half a century withering corn across the Midwest, agricultural experts on Tuesday urged international action to prevent the global spike in food prices from causing global hunger."

Science is at the heart of some key policy issues dividing Republicans and Democrats. Presidential candidates Obama and Romney may never square off in person on TV over scientific issues like climate. But through "Science Debate 2012," they are addressing them in writing online. Is that good enough?

"The Democratic party has restated its commitment to combat climate change and boost clean energy in the party platform it will approve on Tuesday at the 2012 party convention in Charlotte, North Carolina. But compared to its 2008 party platform, the 2012 version, called Moving America Forward, offers more restrained statements about the urgency of addressing climate change and shifts the party's energy strategy away from going "green" toward an "all-of-the-above" approach, a phrase also used in the Republican's 2012 platform."

"It's been seven years since a poisonous cloud spread across tiny Graniteville, S.C., after a deadly train wreck rocked the gritty textile community. And since that tragic morning in January 2005, a group of researchers has been tracking the lingering effects of chlorine on the public health."

"The Obama administration has cleared another hurdle for Shell to drill in Alaska’s Arctic waters – the second in as many days – changing the company’s air pollution limits so its drill ship can operate in the Chukchi Sea."

Crews from the DC-area Washington Suburban Sanitary Commission spend a lot of time checking the sewer pipes outside restaurants. The grease that builds up in the network of sewer pipes causes some 40 percent of sewer overflows in the U.S.