SN Online

LIFE
A study documents homicide among chimps. Read “Chimps show lethal side.”

ATOM & COSMOS
Cameras spy a Martian dust devil in “Tall, devilish storm skids across Mars’ surface.”

DELETED SCENES BLOG
For two astrophysics studies, negative results were meaningful. See “A result of zero doesn’t always mean zero results.”

A dairy cow with a rare form of prion disease is probably not a threat to people. Read “ California mad cow case no reason for panic .”