The sand is pumped underground along with water and other chemicals to extract oil and natural gas trapped deep in rock. But researchers found that air samples taken at some drilling sites contained levels of very fine silica particles high enough to be dangerous to workers.
The EPA is proposing regulations for lower-sulfur gasoline. It says that will reduce smog — leading to reductions in illnesses and death related to dirty air. Some GOP lawmakers oppose the rules because the price of a gallon of gas would rise — some experts say by a penny, others by more.
House Speaker John Boehner condemned the use of the term by Rep. Don Young, R-Alaska, one of the most senior Republicans in Congress. Young's comment, his quick apology, and Boehner's statement come at a particularly sensitive time for the GOP in its relationship with Hispanic voters.
Guest host Celeste Headlee speaks with Al-Jazeera's Abderrahim Foukara and NPR's Deb Amos about the worsening refugee crisis in countries bordering Syria. Rioting at refugee camps and rumors of deportations are putting the spotlight on Jordan and Turkey's ability to manage the refugee influx.