Extremely hot days are prime for bad air because hydrocarbons evaporate into the air, helping to create ozone.
Credit Ramin Talaie / Getty Images
The Environmental Protection Agency is expected any day now to tighten the standard for how much ozone is safe to breathe, but the level of ozone that scientists say is safe doesn't sit well with industry. The agency decision is sitting at the White House, awaiting approval.
The EPA is redoing the ozone standard set under President George W. Bush. The Bush administration's EPA ignored the advice of its own panel of outside scientific advisers. It set the standard for a healthy level of ozone in the air at 75 parts per billion.
Norway's king and queen were at Oslo Cathedral Sunday at a memorial service for the slain children of the country's political elites. The victims were shot and killed at a holiday camp; four people killed when a car bomb heavily damaged government buildings on Friday.
U.S. Secretary of State Hillary Clinton is claiming some modest successes after several days of talks with Asian leaders in Bali, Indonesia. The issues that stood out included territorial disputes in the South China Sea, Myanmar and North Korea.
After three days of talks, Clinton noted that tensions over the South China Sea issue have eased since last year, thanks in part to nonbinding guidelines that China and ASEAN approved Thursday to handle the dispute.
More details are emerging about the political views of the person who allegedly massacred nearly a hundred people in Norway on Friday. He was not a member of a neo-Nazi party, but did contribute to a right-wing website. Goran Skaalmo of the Norwegian Business Daily offers his insight.
Norway is now in a state of mourning after the two terrorist attacks that killed at least 92 people on Friday. Host Linda Wertheimer speaks with NPR's Terry Shultz about how the country is reacting to the events, and the latest on the search and rescue operation. (03:45)
The opening of financial markets in East Asia is causing anxiety in official Washington and beyond. The concern is that a Friday night breakdown in talks between President Obama and House Speaker John Boehner on raising the debt ceiling may have negative repercussions when trading gets under way.
More meetings took place all day Saturday, first at the White House, then at the Capitol, seeking that elusive bipartisan deal.
People pay tribute to victims of the twin attacks before a memorial service at Oslo Cathedral in Norway on Sunday. At least 93 were killed and nearly 100 were wounded in Friday's attacks.
Credit Emilio Morenatti / AP
The man blamed for attacks on Norway's government headquarters and a youth retreat that left at least 93 dead said he was motivated by a desire to bring about a revolution in Norwegian society, his lawyer said Sunday.
In a manifesto he published online, the suspect says his life began to change during the first Gulf War, when a Muslim friend cheered at reports of missile attacks against U.S. forces.