Edwin Hubble changed our ideas about the universe
Amateur dinosaur tracker uncovers some rare fossils
New York officials work to curtail price gouging
Words and their stories: state nicknames, part 1
Russian Prime Minister calls for ban on smoking in public
Puberty lessons for African girls may raise attendance
Ukraine feminists campaign against sex tourism(视频)
Gas shortages test patience of motorists following Sandy
Obama, Romney head to key states on election eve
'Gangnam Style' boosts S.Korean tourism
Obama victory driven by economy, turnout
Are smartphone apps encouraging young smokers?
Condition of oceans affects human health
Experts work to develop better tools to predict severe weather
Power still out for many in New York city
Scientists dispute study of genetically modified corn
Global warming might threaten water supply
DC dinosaur hunter; New family movies
After Sandy, Wall Street closed for 2nd day
President Obama wins second term
New medical tape reduces pain for newborns, older adults
US Congress demands inquiry into Petraeus resignation
Words and their stories: down to earth
Eleanor Creesy helped guide one of the fastest sailing ships ever built
Is eating like our ancestors good for us?
Blake Shelton wins big at CMA Awards
Hurricane Sandy reignites climate change debate
Psychologist tells inspiring story of his giant uncle
Relations between Britain and its American colonies
Taylor Swift's 'Red' among 2012's best sellers