Oxfam: Power, water shortages in Goma

Ocean floor reveals past climate changes

Epilepsy disorder suffered by millions around the world

New rules aim to improve US food safety

Five actresses compete for coveted Oscar

Benedict departure will leave little room for change

US president attends inaugural prayer service

Words and their stories: Belittle

California attracts cars of the future

Gay rights groups push for anti-discrimination laws

California voters reject food labeling requirement

E-commerce challenges traditional stores

除了说声Good luck，你还能怎么祝人家好运？

First lady's new hairstyle creates buzz

奥巴马发表农历蛇年贺词

Social Innovation Summit 2012 comes to an end

New technology used to track US flu outbreak(视频)

United States Senate's process of confirming the president's nominees

Major progress in health through technology

Words and their stories: Losing it

Washington insider Susan Rice could face tough nomination battle

Discover America with American Mosaic!

Watching for early signs of autism in babies

Words and their stories: State nicknames, part 4

Inaugural festivities put the 'party' into political parties

A flower in winter: The story of the poinsettia

What online teens consider 'research'

Music would not be the same without the guitar

Televisions stole the spotlight at the consumer electronics show

WHO warns of malaria resurgence