Have black widow spiders lost their bite?

Sky-gazers caught a rare glimpse of Venus framed by the Sun.

Tiny Ecuadorian spiders play a big part in the study of biodiversity. 

Fossil gives scientists a heads-up on the origin of flexible infant skulls.

Scientists analyze ancient glaciers to understand climate change today.

Cephalopods turn skin patterns on and off to fool predators.

Scientists connect a superbug’s resistance to antibiotic-laced livestock feed.

SpaceX launches the first private mission to the International Space Station.

The Space Shuttle Enterprise took a final flight on the way to its new home in New York City.

Twitter provided real-time data on a cholera outbreak in Haiti.