Notes from NATURE.com

Here are a few articles from Nature magazine that I've gleaned from their e-mail newsletters over the last couple of weeks.

Shaped from clay "Minerals help molecules thought to have been essential for early life to form."
Prions suspected in milk "Sheep mammaries shown to contain agents of fatal brain disease."
Robot surgeons scrub up "Future operations could be performed from the inside."
Nanocar takes a test drive "It's the smallest thing on four wheels"
Extra brain cells curb appetite "Neural injections cause long-term weight loss in mice."
Marijuana may make your brain grow "Cannabinoid injections sprout new neurons in mice."