Ricin is one of the most poisonous substances on Earth and it's scarily easy to make.
"Meat-eating," not "man-eating." Still cool though.
Is pure MDMA "absolutely" safe, as a Canadian health official claimed last year?
Dogs, cats, chimps, and more!
A former spy's excruciating death by radiation poisoning marks the beginning of an era of high-tech hit men who can kill from anywhere
Behind the scenes at the DARPA Grand Challenge, the 142-mile robot race that died at mile 7
Study shows that triathlons are twice as deadly as marathons
A rash of climate-related deaths adds fuel to the debate about global climate change.
Space-age technology helps combat an old disease
The UN will formally announce the triumph this summer
The tale of the "plant hunters," farming whales, vegetable matter that rains from the sky and more
Avalanches, exposure, heart attacks, and the other tragic ways Everest has claimed climbers' lives.
New research suggests the lifespan of our cells isn't genetically determined.
How are the conditions where you live?
The secret could be silk
This new way of looking at cells is revolutionizing biochemistry.