MicroRNA discovery in worms leads to Nobel Prize in medicine
SpaceX launches European asteroid probe as hurricane weather closes in
Maps show which states could see northern lights this weekend
Type of firefly could be first on federal endangered species list
Book excerpt: "Revenge of the Tipping Point" by Malcolm Gladwell
50 "exceptionally well-preserved" Viking skeletons unearthed in Denmark
New species of "ghost shark" discovered living deep in the Pacific Ocean
Hurricane John intensifies suddenly, slams into Mexican tourist hotspots
