Amnesty Slams Shell Over Oil Spills in Nigeria over 12 years

Study Shows Memories Take Hold Better During Sleep over 12 years

Scientists Try to Mate Galapagos Tortoise — Again over 12 years

Chess Experts Use Brain Differently than Amateurs over 12 years

UN Weather Agency Says 2010 Warmest Year Ever over 12 years

Study Shows How Skin Cancer Cells Evade Immune System over 12 years

Researchers Aim to Resurrect Mammoth in Five Years over 12 years

End of US shuttle Program Poses Safety Risks over 12 years

Scientists Say Tagged Penguins Could Harm Their Survival over 12 years

NASA to Launch Discovery on Feb. 24 over 12 years

Hong Kong Researchers Store Data in Bacteria over 12 years

Chile Scientists Seek Alcoholism Vaccine over 12 years

Autism Study Doctor says Victim of Smears over 12 years

Germany's Terminally-Ill 'Dr. Death' to Put Own Body on Show over 12 years

NASA Finds More Cracks on Discovery Fuel Tank almost 13 years

Scientists Compile List of World's Plants almost 13 years

Facebook Founder Named Time's 'Person of Year' almost 13 years

Yahoo Preparing to Lay off 600 to 700 Workers almost 13 years

IBM Pitches "Smart" Cities as Planet Savers almost 13 years

Experts Race to Solve Egypt Shark Attack Mystery almost 13 years