Words and their stories: military expressions

United Nations report urges

Number of Chinese students in US dramatically expands

Pirate attacks are down in 2012

Seeking HIV tests for all in US age 15-65

Seattle, 'City of Clocks' keeps on ticking

Serving farm-fresh meals at the farm

French experts question GMO cancer study

NYC schools expand birth control availability

Rare fungal meningitis outbreak in United States

Every night is fright night at Elegant Theater

Polio victim searches for love in 'The Sessions'

Unusual Mars rock surprises rover scientist

New report outlines strategy for HIV/AIDS

Irrigation pioneer wins world food prize

America's break with Britain divides families and friends

Slow progress on curbing deforestation expected at climate conference

Visit to a medical museum

Mobile phones could help efforts to end malaria

Maryland shop cooks up chocolate vote

Wastewater plants extract nutrients from sewage

Minnesota state fair holds big sing along

Nobel Prize in economics recognizes 'market designers'

Was Jesus married?

Interfaith worshipers celebrate sea, surf

West Nile surge keeps exterminator busy

Electronic dance music bounds into mainstream

Marian Anderson: Her voice became famous around the world

Many millions suffer from depression

Student street clinic helps homeless(视频)