For the first time in 80 years, scientists are posting equipment at the peak of the Washington Monument to measure the obelisk's height.
Maryland public school students have scored above national averages in a national assessment.
Decades-old styrofoam continues to blight the Anacostia River and now the District is considering a ban on the ubiquitous foamy plastic.
A national assessment shows Virginia fourth-graders' reading and math skills are continuing to improve
Southern California sky, and Twitter, light up with reported fireball, most likely meteor
Clarification: Deadly Seawater Bacteria story
Glance: Average 4th and 8th grade math and reading scores by state for 2011, 2013
Minnesota man controls over 40 miles of caves, enjoys seeing 'what's around the next corner'
Public gets first glimpse at new species of dinosaur discovered in southern Utah
Study says there are billions of Earth-like, just-right planets out there
Can a beagle's nose tell when a polar bear is pregnant? Ohio zoo's conservationists think so
EU Commission backs OK for a 2nd genetically modified corn, sends issue to bloc's 28 nations
Report: Swiss scientists find possible evidence that Palestinian leader Arafat was poisoned
Some statistics about polar bears, a threatened species
Report says global warming likely to make starvation, poverty and other problems only worse
When picking a winner in a fight between a mouse and a scorpion, most people would probably pick the scorpion.
Facing grim prognosis, Indiana hunter paralyzed in fall from tree chooses to end life support
Scientists report Asian carp DNA found in water sample taken from Lake Michigan near Wisconsin
Polar bear researchers experiment with crowdsourcing for data on climate change's effects
1st American to orbit Earth remembers fellow pioneer Scott Carpenter as adventuresome, curious