Music classes in childhood may lead to changes in the brain

Arrests in the shooting of a Pakistani schoolgirl

Musical legend Chuck Berry still reeling and rocking on stage at 86

Apollo's final missions: The last footsteps on the moon

US president chosen by electors, not popular vote

Unusual Mars rock surprises rover scientist

Many millions suffer from depression

Student street clinic helps homeless(视频)

Violin maker keeps family tradition alive

'Haunted Houses' attract big crowds on Halloween

Refugee camps are a breeding ground for disease

Demand for wheat growing in Sub-Saharan Africa

United Nations report urges

Some illegal immigrants allowed to stay under Obama order

Consumer spending will decline unless Congress averts fiscal cliff

West Nile surge keeps exterminator busy

American history: A new world clash of cultures

Obama appeals to public about 'fiscal cliff'

Research grows through citizen science

Femen's topless protest tactics hit Paris(视频)

How to win a debate, Presidential or otherwise

William Shakespeare: Star of stage and screen

World AIDS Day 2012 more hopeful than in past

Number of Chinese students in US dramatically expands

Obama calls human tafficking 'slavery'

Rare fungal meningitis outbreak in United States

Maryland man is real hero behind 'Argo'

Effort underway to boost US voter participation(视频)

Seattle, 'City of Clocks' keeps on ticking

Nobel Prize in economics recognizes 'market designers'