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  1. Scientists gather at the European Organisation for Nuclear Research (CERN) data quality satellite control center of the ATLAS detectors during the restart of the Large Hadron Collider (LHC) in Meyrin, near Geneva, Switzerland, Monday, Nov. 23, 2009. Scientists turned on the Large Hadron Collider on Friday night, Nov. 20, 2009, for the first time since the machine suffered a failure more than a year ago and had to be shut down shortly after the start. (AP Photo/Keystone, Laurent Gillieron)
    Big Bang atom smasher starts speeding proton beams AP - Tue Nov 24, 11:56 AM ET

    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.

  2. This image made from NASA TV Tuesday, Nov. 24, 2009 shows the 12 space travelers aboard the orbiting shuttle-station complex during a news conference. Atlantis will undock from the space station on Wednesday. (AP Photo/NASA)
    Shuttle, station crews seal hatches for departure AP - Tue Nov 24, 2:02 PM ET

    CAPE CANAVERAL, Fla. - After nearly a week together, the crews of shuttle Atlantis and the International Space Station said goodbye Tuesday and closed the hatches between them.

  3. Shocking Treatment Helps Erectile Dysfunction LiveScience.com - Mon Nov 23, 8:36 AM ET

    If you experience impotence, instead of a little blue pill maybe you want to apply shockwaves to your privates instead.

  4. University students carry large red ribbons on a street during an HIV/AIDS awareness rally ahead of World AIDS day in Shenyang, Liaoning province November 29, 2008. REUTERS/Stringer
    UN: HIV outbreak peaked in 1996 AP - Tue Nov 24, 10:14 AM ET

    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.

  5. Is Case Finally Closed on 1965 Pennsylvania 'UFO Mystery'? SPACE.com - Tue Nov 24, 4:16 PM ET

    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.

  6. A highway in San Francisco, California. US President Barack Obama sought Tuesday 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.(AFP/Getty Images/File/Justin Sullivan)
    Obama, Singh boost hopes of climate deal AFP - 2 hours, 42 minutes ago

    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.

  7. This NASA Hubble Space Telescope image shows Mars in 2005. A new detailed map of Mars shows what was likely a vast ocean in the north and valleys around the equator, suggesting that the planet once had a humid, rainy climate, according to research published Monday.(AFP/NASA-HO/File)
    New Map Bolsters Case for Ancient Ocean on Mars SPACE.com - Mon Nov 23, 5:30 PM ET

    Several lines of evidence point to the possibility of a past ocean on Mars, from apparent ancient shorelines to chemicals in the soil.

  8. Play 'Cosmic Slot Machine' and Help Astronomers SPACE.com - Tue Nov 24, 11:00 AM ET

    A new website will let people play a form of "cosmic slot machine," matching up images of colliding galaxies with millions of simulated mash-ups to find the best model.

  9. File photo shows people evacuating a village close to Havana following Hurrican Ike. Flooding in the world's major port cities caused by melting icecaps could cause up to 28 trillion dollars (18 trillion euros) in damage in 2050, environmental group WWF said in a report Monday.(AFP/File/Adalberto Roque)
    Melting icecaps to damage major port cities: WWF AFP - Mon Nov 23, 1:56 AM ET

    GENEVA (AFP) - Flooding in the world's major port cities caused by melting icecaps could cause up to 28 trillion dollars (18 trillion euros) in damage in 2050, environmental group WWF said in a report Monday.

  10. 5 Questionable Health Screening Tests LiveScience.com - Tue Nov 24, 2:02 PM ET

    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.

  11. China moves to protect pandas from swine flu AP - Tue Nov 24, 7:03 AM ET

    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.

  12. Dark ocean depths home to exotic, unknown life Reuters - Tue Nov 24, 2:05 PM ET

    OSLO (Reuters) - The permanent darkness of the ocean depths is home to a far greater range of animals, from luminous jellyfish to tubeworms that live off oil seeping from the seabed, than previously thought, scientists said on Sunday.

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