Mighty Mouse

Genetic engineers at Japan's Tokyo University have successfully switch off the genes in a mouse that cause it to fear the smell or presence of cats. This would seem to suggest that fear in mammals is more of a genetic trait than a learned one, though I'm not sure how wise it would be to go creating a generation of fearless creatures. While it might do wonders for those who would love to go skydiving but are just too chicken, the fact remains that if that mouse doesn't run, he's going to end up as Meow Mix. More details here.