Dulles International Airport Weather Forecasts

By Alice Mannette Ian Simpson MOORE, Oklahoma (Reuters) - Pre-dawn emergency workers searched feverishly for survivors in the rubble of homes, primary schools and an hospital in an Oklahoma City suburb ravaged by a massive Monday afternoon tornado feared to have killed up to 91 people and injured well over 200 residents. …

NORMAN, Okla. (AP) — More severe weather is in the forecast for parts of the central United States already reeling from powerful tornadoes this week.

MOORE, Okla. (AP) — The parents and guardians stood in the muddy grass outside a suburban Oklahoma City church, listening as someone with a bullhorn called out the names of children who were being dropped off — survivors of a deadly tornado that barreled through their community.

MOORE, Okla. (AP) — I left the office in Oklahoma City as soon as I saw the tornado warnings on TV. I had photographed about a dozen twisters before in the past decade, and knew that if I didn't get in my car before the funnel cloud hit, it would be too late.

LONDON — The first British astronaut ever to visit the International Space Station will launch in 2015 for a six-month mission that may involve spacewalks, wrangling visiting robotic spacecraft and space experiments, the UK Space Agency announced today (May 20).

Eye-popping images of celestial wonders shining over equally stunning Earth views have won the top spots in the 2013 International Earth and Sky Photo Contest, competition organizers say.

SHAWNEE, Okla. (AP) — When Lindsay Carter heard on the radio that a violent storm was approaching her rural Oklahoma neighborhood, she gathered her belongings and fled. When she returned, there was little left of the community Carter had called home.

A psychological warfare program centered on vomit could help save the marbled murrelet, an endangered seabird that nests in California's old-growth redwood forests.

SAN MATEO, Calif. — The word "drone" tends to conjure up images of planes that kill terrorists or of creepy surveillance tools.

Whether or not NASA's Kepler spacecraft can bounce back from the malfunction that has stalled its search for alien planets, the mission's place in history is assured, scientists say.

GRANDE RIVIERE, Trinidad (AP) — Giant leatherback turtles, some weighing half as much as a small car, drag themselves out of the ocean and up the sloping shore on the northeastern coast of Trinidad while villagers await wearing dimmed headlamps in the dark. Their black carapaces glistening, the turtles inch along the moonlit …

The moon generated a surprisingly intense magnetic field until at least 3.56 billion years ago, 160 million years longer than previously thought, a new study reports.

A new stem cell discovery has reawakened controversy about human cloning — though technical challenges mean scientists are far from being able to create human babies as in Michael Bay's 2005 sci-fi flick "The Island."

Sometimes, numbers are the only way to tell the true tale of a disaster incomprehensible in scale and indescribable in words. For the victims of Hurricane Sandy, those numbers paint a bleak picture. The storm is estimated to have caused between $50 …

SANTA CLARITA, Calif. (AP) — As firefighters took on a stubborn 3-day-old wildfire Friday in rough terrain north of Los Angeles, a second and more serious blaze broke out 30 miles away near Interstate 5, quickly surging to more than 500 acres, briefly threatening an elementary school and leading to the precautionary evacuation …

Harlequin ladybirds carry a parasite that does not kill them--but does kill other ladybug species that attempt to eat the harlequin progeny. Sophie Bushwick reports

By Jana J. Pruet GRANBURY, Texas (Reuters) - All seven of the people listed missing after a monster tornado on Wednesday have now been accounted for in Granbury, Texas, leaving the death toll at six, authorities said on Friday. Workers were clearing debris to allow residents of the most damaged areas to return to see the …

The moon has a new hole on its surface thanks to a boulder that slammed into it in March, creating the biggest explosion scientists have seen on the moon since they started monitoring it.