World Prematurity Day aims to lower rates of premature births

Relations between Britain and its American colonies

New study could change treatment for asthma

On the bubble?

到别人家做客的十大禁忌

Home TB treatment is helping patients in Swaziland

Virginia Museum show features glass art pioneer Dale Chihuly

Medical students help the homeless

US Congress demands inquiry into Petraeus resignation

A declaration seeking life, liberty and the pursuit of happiness

Did hurricane Sandy send a climate warning?

Kyoto Protocol winds down as delegates head to Doha

Scandals highlight ethics lapses in military(视频)

President Obama wins second term

Number of international students attending American colleges and universities continues rising

New medical tape reduces pain for newborns, older adults

Experts work to develop better tools to predict severe weather

Power still out for many in New York city

Global warming might threaten water supply

California voters reject food labeling requirement

Everglades National Park–one of the world's great biological wonders

Words and their stories: top brass

US 'patriotic millionaires': 'tax us more'

Holiday season features latest, hottest electronic gadgets

Over a billion women lack safe sanitation

Thanksgiving, but US turkey farmers aren't celebrating

Ethiopia permits mobile banking and money services

How an allowance helps children learn about money

Efforts mount to conserve wild turkey breeds

Is eating like our ancestors good for us?