Obama yields on smog rule in face of GOP demands (Update)

(AP) -- In a dramatic reversal, President Barack Obama on Friday scrubbed a clean-air regulation that aimed to reduce health-threatening smog, yielding to bitterly protesting businesses and congressional Republicans who ...

Obama unveils new car efficiency standards

US President Barack Obama on Friday unveiled a new deal with automakers on fuel economy standards that he said would be a crucial step towards reducing US dependence on foreign oil.

Obama to announce new car efficiency standards

US President Barack Obama will later this week unveil new fuel efficiency standards for passenger cars and light trucks for the 2017-2025 period, the White House said Wednesday.

Obama dials for pizza, gets space station

Astronauts aboard the International Space Station got a very long-distance call Friday from US President Barack Obama, who joked that he thought he was dialing out for pizza.

China's space program shoots for moon, Mars, Venus

This year, a rocket will carry a boxcar-sized module into orbit, the first building block for a Chinese space station. Around 2013, China plans to launch a lunar probe that will set a rover loose on the moon. It wants to ...

Why shuttles are being retired, what's next

Thirty years of flight by NASA's space shuttles will end once Atlantis returns home from this last mission. The space agency will be looking to deeper space exploration, but the future is still somewhat unclear.

US lawmakers vote to kill Hubble successor

In a fresh blow to NASA's post-shuttle aspirations, key US lawmakers voted Thursday to kill off funding for the successor to the vastly successful space-gazing Hubble telescope.

Why space shuttle fleet is retiring, what's next

As the space shuttle program winds down, questions are flying about what's happening and why. The launch countdown began Friday for the second-to-last flight. Some answers about the end of the space shuttle:

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