This date in science: Happy birthday, Harrison Schmitt

Born July 3, 1935, Harrison "Jack" Schmitt is the only trained scientist to have walked on the moon, so far.

Russian rocket explodes on liftoff from Kazakhstan desert

There were no immediate reports of casualties when a Russian Proton-M heavy lift rocket exploded on liftoff earlier today.

View from space: Four largest Texas cities

This striking astronaut photograph taken from the International Space Station (ISS) shows the four largest cities in Texas at night.

Zapping salt out of seawater

Chemists are hopeful their new energy-efficient method to desalinate water can be scaled up for personal or even municipal uses

21% of homes account for 50% of greenhouse gas emissions

Energy conservation in a small number of households could go a long way to reducing greenhouse gas emissions, scientists are reporting.

This date in science: St. Lawrence Seaway opens

June 26, 1959 marked the official opening of the St. Lawrence Seaway, inaugurating an overland water passage from the Great Lakes to the Atlantic Ocean.

New laser shows what substances are made of

A new laser that can show what objects are made of could help military aircraft identify hidden dangers such as weapons arsenals far below.

Lawn herbicides detected in dogs

Homeowners often apply herbicides to their lawns to control weeds, but sometimes pets can be unintentionally exposed to those pesticides scientists say.

See a supermoon! Awesome photos of the June 2013 supermoon

Thank you for your photos! They're awesome!

100,000 may need to evacuate due to floods in Alberta, Canada

Water levels are expected to reach their maximum around noon today in floods in Alberta, Canada, which have left 12 communities under a state of emergency.