The Arizona assassination attempt on Rep. Gabrielle Giffords has focused attention on U.S. gun laws, which are among the most permissive in the developed world. Here are some of the key federal and state laws:
* CONSTITUTION:: The Supreme Court in a key ruling in 2008 supported the right of individual Americans to own guns for self defense. Gun owners, represented by the powerful National Rifle Association, have jealously guarded this right and opposed any proposed law they see as diluting it.




Astronomers have discovered the smallest planet outside our solar system, and the first that is undoubtedly rocky like Earth. Measurements of unprecedented precision have shown that the planet, Kepler 10b,has a diameter 1.4 times that of Earth, and a mass 4.6 times higher.
Last summer, as torrential rains flooded Pakistan, a veteran intelligence analyst watched closely from his desk at CIA headquarters just outside the capital. For the analyst, who heads the CIA's year-old Center on Climate Change and National Security, the worst natural disaster in Pakistan's history was a warning.
Israeli bulldozers have demolished part of a hotel in East Jerusalem to make way for 20 homes for Jewish settlers. The destruction of the Shepherd Hotel has angered Palestinians, who want East Jerusalem as the capital of a future Palestinian state.
According to a 2007 survey, the United States leads the world in gun ownership: 90 guns per 100 people. We are a country with five percent of the world's people and between 35 and 50 percent of its civilian-owned guns. That's something like 270 million weapons.
The kick-off of the 112th Congress on Wednesday also marked the end of an era in the House – the demise of a committee devoted solely to climate change and energy issues. The Select Committee for Energy Independence and Global Warming, created by Nancy Pelosi in 2006, has been shuttered under the new Republican leadership. In the final days of the committee, staffers released a report on what the committee accomplished in its brief tenure – an epitaph of sorts.





























