US firms prospering in Asia, Russia(视频)

Scientists seek HIV vaccine using monkey model

New heart stents better than old ones, study says

Protests spread over anti-Islam video

'War of 1812' flag still inspires after 200 years

Designing an alternative to antibiotics

National 9/11 museum at standstill as anniversary nears

After long fight, DC wins right to a statue in the Capitol Building

Refugee camps spread life-threatening diseases

Worries about rising food prices may ease

Sea life color codes food to evade danger

US automakers bet billions on Russian car boom

Carlsbad Caverns National Park in New Mexico

The Occupy Movement turns one

Despite recession, blow-dry bars heat up

Tree deaths linked to climate change

Turning industrial waste-heat into electricity

Tensions rising again over Iran's nuclear program(视频)

CPJ: Journalists need new ways to stay safe

American history: Columbus discovers the New World

Teens help revive California nature

US ambassador killed in Libya

Fewer children under the age of five are dying

To avoid humans, tigers take night shift

Uneven signs of growth in the transport industry

IB program aims to form 'students of the world'(视频)

Marylanders recall bloodiest day in US history

Tons of methane gas could be trapped under Antarctica

Dire warnings issued on diminishing Arctic ice(视频)

Apollo 13: 'Houston, we've had a problem here'