New rules aim to improve US food safety
A flower in winter: The story of the poinsettia
Killing of US school children sparks gun control discussion
California voters reject food labeling requirement
Inaugural festivities put the 'party' into political parties
Getting a firm grip on weed control
WHO warns of malaria resurgence
Televisions stole the spotlight at the consumer electronics show
Gay rights groups push for anti-discrimination laws
California attracts cars of the future
Words and their stories: State nicknames, part 4
How babies learn, when, and even in what position
Words and their stories: Losing it
Watching for early signs of autism in babies
New technology used to track US flu outbreak(视频)
London set for huge Chinese New Year celebrations
Soaring population, climate change stress resources
Words and their stories: Santa Claus
US economy faces another cliff
Home TB treatment is helping patients in Swaziland
Benedict departure will leave little room for change
Words and their stories: state nicknames, part 3
Michelle Obama stuns in Jason Wu gown
Tablet computers most wanted gift this holiday
Ocean floor reveals past climate changes
Teenager wins top prize for pancreatic cancer test
What online teens consider 'research'
Britain could be on oath to EU exit(视频)
Words and their stories: Belittle
Is investing in Africa a good bet?