Rat blamed for Japanese nuclear disaster

Tepco, the operator of the ill-fated Fukushima Daiichi nuclear power plant might have found the culprit responsible for the plant’s partial meltdown and it has four legs and a wiggly tail. 

Black Death DNA sequenced from fourteenth-century teeth

An international team of scientists has sequenced the entire genome of the Black Death, extracted from skeletons more than 700 years old.