
A child's never-ending "why's" aren't meant to exasperate parents, scientists say. Rather, the kiddy queries are genuine attempts at getting at the truth, and tots respond better to some answers than others.
GENEVA - The world's largest atom smasher used its accelerator Tuesday to speed up proton beams for the first time as scientists moved ahead in efforts to learn more about the universe.
Several lines of evidence point to the possibility of a past ocean on Mars, from apparent ancient shorelines to chemicals in the soil.
If you experience impotence, instead of a little blue pill maybe you want to apply shockwaves to your privates instead.
GENEVA - The number of people worldwide infected with the virus that causes AIDS — about 33 million — has remained virtually unchanged for the last two years, United Nations experts said Tuesday.
Texting long messages can be a pain in the neck - literally.
CAPE CANAVERAL, Fla. - Shuttle Atlantis undocked from the International Space Station early Wednesday, headed home with one astronaut eager to hold his newborn daughter for the first time and another who's been away from her young son since the summer.
Knowledge is power, unless that knowledge comes with so much baggage that it becomes crippling. Such is the trouble with many cancer and health screening tests.
For older people, gabbing on a cell phone while walking across the street may increase the chances of being run over, according to a new study, although earlier research did not find the same connection among younger people.
Darwin is going digital. To celebrate the 150th anniversary of the publication of Charles Darwin's "On the Origin of Species," the manuscripts detailing the theory of natural selection are being placed online.

GENEVA - The world's largest atom smasher used its accelerator Tuesday to speed up proton beams for the first time as scientists moved ahead in efforts to learn more about the universe.
In the chronicles of UFO oddness, there's been a long-standing oddity – some say folklore, others deem it reality. This saga, now over four decades old, centers on a reported out-of-the-sky incident involving the small town of Kecksburg, Pennsylvania.
If you experience impotence, instead of a little blue pill maybe you want to apply shockwaves to your privates instead.
CAPE CANAVERAL, Fla. - Shuttle Atlantis undocked from the International Space Station early Wednesday, headed home with one astronaut eager to hold his newborn daughter for the first time and another who's been away from her young son since the summer.
A blistery and chilly day was expected in the Midwest and Great Lakes on Wednesday, while the Pacific Northwest was forecast to remain wet and cool.
Texting long messages can be a pain in the neck - literally.

BEIJING - A panda research center in northwestern China has been closed to visitors as a precaution to protect the endangered species from catching swine flu, state media reported on Tuesday.
WASHINGTON (AFP) - US President Barack Obama sought to boost hopes of a landmark deal at the Copenhagen climate summit, as a new report showed the crisis facing the planet is deeper than previously thought.
BEIJING (AFP) - China called on the European Union Tuesday to step up cooperation on climate change, saying global warming would be at the top of the agenda at next week's China-EU summit.
WELLINGTON, New Zealand - Ships are on alert and maritime authorities are monitoring the movements of hundreds of menacing icebergs drifting toward New Zealand in the southern Pacific Ocean, officials said.
Internet security and climate change had a surprising run-in last week, as thousands of emails from the University of East Anglia's Climate Research Unit wound up on climate-skeptic web sites. The University says it is cooperating with police and launching its own investigation into how the emails wound up online.
ST. PAUL, Minn. - A push to scrap a Minnesota law barring new nuclear power plants gained a pair of influential supporters Tuesday, adding intensity to a debate before a state Legislature that has narrowly resisted the change.
TALLAHASSEE, Fla. - A Democratic candidate for agriculture commissioner has a response to Republican calls to "Drill, Baby, Drill."
Junk Science: The Senate expects to take up global warming legislation by spring, but nothing more should happen in Congress on this issue until there's been a thorough probe of the ClimateGate scandal.
Knowledge is power, unless that knowledge comes with so much baggage that it becomes crippling. Such is the trouble with many cancer and health screening tests.
A new solar telescope, scheduled to launch this winter, will probe the sun's atmosphere and inner workings, helping scientists better understand how solar storms.
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