A series of tornadoes struck the central United States this week, including a powerful storm in Oklahoma that killed at least 24 people. Marshall Shepherd, the president of the American Meteorological Society, describes the ingredients of major tornadoes, and how they are predicted.
Federal prisoners can request compassionate release if they are terminally ill, but a recent investigation found that many die while their requests drift through the system. Now, prison leaders say they will simplify the approval process and start tracking requests electronically.
Itch can be a useful warning sign, or a maddening symptom with no cure. But the origins of itch have long been a mystery. Scientists think they've come closer to understanding the origins of itch in a molecule that makes mice scratch like mad.
Two mothers whose sons were killed during the first Gulf War talk about how they became friends after their sons died. The past 22 years would have been tough without the friendship, because, as one tells the other, "what's in our hearts we share."
President Obama discussed America's counter-terrorism strategy — including the use of drones and the prison at Guantanamo Bay — during an address at the National Defense University on Thursday. He rejected the idea that the country can fight an open-ended "global war on terror."
There were hugs and tears, smiles and laughter on Thursday, as students and teachers from Plaza Towers Elementary School, destroyed in Monday's tornado in Moore, Okla., reunited. The school district reopened all of its schools just for the day on what would have been the final day of classes before summer vacation.
Officials are forecasting that hurricane activity will be "above normal" this season, with 13 to 20 named storms. As many as six of those could be major hurricanes. Warm ocean waters and the lack of El Nino conditions are partly to blame.
Abortion opponents are hoping the recent murder conviction of Pennsylvania abortion provider Kermit Gosnell will lead to more scrutiny of second trimester abortions. They're working on a bill that would ban most abortions after 20 weeks of pregnancy — nationwide.
In a speech at the National Defense University, President Barack Obama addresses the use of U.S. drones to target terrorists — including U.S. citizens — and his renewed efforts to close the military prison at Guantanamo Bay.
Amid warnings the proposal would shatter support for the measure, Democrats backed away from a provision that would allow gay U.S. citizens to sponsor foreign-born spouses for green cards. Advocates for gay and lesbian immigration rights accused Democrats of caving in to threats.