Are smartphone apps encouraging young smokers?

Obama, House Speaker take positions on budget before negotiations

Improving 'feed efficiency' in cattle

Obama, Romney head to key states on election eve

Experts work to develop better tools to predict severe weather

Breathe Carolina re-releases

Global warming might threaten water supply

Blake Shelton wins big at CMA Awards

New York officials work to curtail price gouging

Number of international students attending American colleges and universities continues rising

Is eating like our ancestors good for us?

The business of learning mandarin

New medical tape reduces pain for newborns, older adults

Make-your-own soap entrepreneurs clean up

Power still out for many in New York city

Psychologist tells inspiring story of his giant uncle

Words and their stories: down to earth

Could waste plastic reduce our need for oil?

Remote US museum survives in Hells Canyon

Russian Prime Minister calls for ban on smoking in public

'Gangnam Style' boosts S.Korean tourism

Medical students help the homeless

American Red Cross feeds hungry after hurricane

Ukraine feminists campaign against sex tourism(视频)

Storm aftermath brings ruin for one NYC family

US 'patriotic millionaires': 'tax us more'

Serving farm-fresh meals -- at the farm

Did hurricane Sandy send a climate warning?

Amateur dinosaur tracker uncovers some rare fossils

Edwin Hubble changed our ideas about the universe