'Largest Orchid in the World' Growing in Brazil over 12 years

Humans May Have Left Africa Earlier than Thought over 12 years

Distant Galaxy Born in the Dawn of Time over 12 years

Study Says Orangutan DNA Boosts Survival Chances over 12 years

US Doctors Turn X-Box Game into PTSD Therapy over 12 years

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 over 12 years