Science - AP

CAPE CANAVERAL, Fla. - The bathroom lines at the already crowded space shuttle and space station complex got a lot longer Sunday because of a flooded toilet.

WASHINGTON - The measure of what humanity can accomplish is a size 9 1/2 bootprint. It belongs to Neil Armstrong, the first man on the moon. It will stay on the moon for millions of years with nothing to wipe it away, serving as an almost eternal testament to a can-do mankind.

MOSCOW - When Neil Armstrong stepped onto the surface of the moon, it was a first for the Soviet Union — the first time the U.S. had beaten the U.S.S.R in the space race.

WASHINGTON - Most Americans have never known a world where man hasn't been to the moon. It used to be a given that people knew where they were when man first walked on the moon on July 20, 1969, watching the black-and-white images on television. But now most Americans don't know where they were because the majority of Americans hadn't been born yet.

CAPE CANAVERAL, Fla. - In the 40 years since Apollo 11, some of the key players, most notably Neil Armstrong, have steered clear of the increasingly bright glare of the moonlight cast by the historic lunar landing. Others have embraced it. Almost all have written books detailing not only themselves but the glory days of space.

NEW YORK - Wade McGillis peered up at the structure propped like a high-tech stick figure — minus the head — on an elementary school roof. Then he examined the electronics attached to its spindly metal frame, looking out over the Harlem brownstones nearby and the skyscrapers farther away.

WASHINGTON - When Neil Armstrong first spoke from the moon, he said one thing and people on Earth heard another. What the world heard was grammatically flubbed: "That's one small step for man; one giant leap for mankind." Armstrong insists he said: "That's one small step for 'a' man." It's just that people just didn't hear it.

BETHPAGE, N.Y. - John Devaney and his colleagues weren't exactly sure what Neil Armstrong would set foot on when he climbed down the ladder of the lunar module to the surface of the moon.

CAPE CANAVERAL, Fla. - It's spacewalking day at the shuttle-station complex. At high noon Saturday, two astronauts will venture out to help attach a platform for science experiments. It's the third and final piece of Japan's huge billion-dollar lab. And it's the first of five spacewalks planned for the shuttle flight.

WASHINGTON - New NASA photos of the moon show the leftovers from man's exploration 40 years ago. For the first time, photos from space pinpoint equipment left behind from Apollo landings, and even the well-worn tracks made by astronauts on the moon surface. The images are from the Lunar Reconnaissance Orbiter, which was launched last month and now circles the moon in search of future landing sites.

DAYTON, Ohio - Buzz Aldrin still has the felt-tipped pen he used as a makeshift switch needed to fire up the engines that lifted him and fellow Apollo 11 astronaut Neil Armstrong off the moon and started their safe return to Earth nearly 40 years ago.

LOS ANGELES - A piece of rocket hardware failed to separate during the launch of a NASA climate satellite earlier this year, causing it crash back to Earth, according to an accident summary released Friday.

WASHINGTON - NASA could put a man on the moon but didn't have the sense to keep the original video of the live TV transmission.

WASHINGTON - Over a century after a Yankee Doodle jockey revolutionized how racehorses are ridden, scientists are figuring out why a jockey's posture speeds up the horse.

ATLANTA - About three out of five Americans believe there will be widespread swine flu cases this fall or winter, but most are not worried it will strike them or their family, according to a survey released Thursday.

CAPE CANAVERAL, Fla. - The astronauts headed to the international space station include a Twittering skipper, a classically trained musician who named her son after one of Columbia's fallen astronauts, and a former Navy SEAL who went into Afghanistan two weeks after the Sept. 11, 2001, terrorist attacks.

WASHINGTON - A new astronomy theory says the solar system's main asteroid belt is littered with icy invaders from far away.

MOSCOW - Russian engineers broke a red wax seal and six men emerged from a metal hatch after 105 days of isolation in a mock spacecraft, still smiling after testing the stresses that space travelers may face on the journey to Mars.

NEW YORK - A cat's purr normally says, "I'm happy." But a new study suggests some purrs send cat owners a much different message: "Feed me!"

WASHINGTON - The way swine flu multiplies in the respiratory system is more severe than ordinary winter flu, a new study in animals finds.

HONOLULU - Tourists coming to Hawaii for high-end getaways could someday be launched from the sand to the stars, taking island-hopping to new heights.

MOSCOW, Idaho - The giant Palouse earthworm has taken on mythic qualities in this vast agricultural region that stretches from eastern Washington into the Idaho panhandle — its very name evoking the fictional sandworms from "Dune" or those vicious creatures from the movie "Tremors."

SAN FRANCISCO - A fast-growing kelp from the Far East has spread along the California coast from Los Angeles to San Francisco Bay, worrying marine scientists and outpacing eradication efforts.

WASHINGTON - The share of Americans who see science as the nation's greatest achievement is down sharply, even as the public continues to hold scientists in high regard. A new Pew Research Center poll indicates that 27 percent of Americans say the nation's greatest achievements are in science, medicine and technology, more than any category other than don't know.

LOS ANGELES - Scientists have detected a spike in underground rumblings on a section of California's San Andreas Fault that produced a magnitude-7.8 earthquake in 1857.

WASHINGTON - El Nino is back.

LONDON - British scientists claimed Wednesday to have created human sperm from embryonic stem cells for the first time, an accomplishment they say may someday help infertile men father children.

WASHINGTON - A drug used to prevent the rejection of organ transplants was found to significantly increase the life span of older mice, researchers report. The National Institute on Aging is testing compounds that may extend the life span of mice. The drug rapamycin is the first to work for both male and female mice, according to a study published online in the journal Nature.