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They have worked with ropes and harnesses to protect them if they fall, but they have made the climb using only their hands and feet.
Michael Suffredini, NASA's ISS Program Manager, discusses the steps taken aboard the International Space Station to safeguard the astronauts, once the anomalous readings took place.
Speaking on the House floor on immigration John Boehner says, "The president's overreach is an affront to the rule of law and the Constitution itself."
The base raised its security level to what is known as Threatcon Bravo, two steps higher than normal.
Tommy Caldwell and Kevin Jorgeson make final push to the top of El Capitan in Yosemite National Park.
President Obama delivers remarks laying out new steps to increase access to affordable, high-speed broadband across the country.
The honors, a tongue-in-cheek antidote to Hollywood's season, will be announced on Feb. 21, the eve of the Academy Awards.
Researcher explains why she exchanged letters with Jihad Jane and shoe bomber Richard Reid, and what she learned.
An Arizona police officer's body camera records the moments leading up to his death. KPNX's Brahm Resnik reports.
Lawyers for bombing suspect Dzhokhar Tsarnaev had asked a judge to delay jury selection in the trial because of "extraordinary prejudice."
