• February 7, 2011   BY Jenny Marder  

    Bed bugs are survivors. They grow as large as ladybugs and can live a year without eating. They move from room to room and leave itchy, bloody welts on skin when they bite. And they wreak havoc on the minds, … Continue reading

  • February 6, 2011   BY Jenny Marder  

    Two solar probes have beamed back the first full images of the sun. The identical twin STEREO spacecraft were launched in 2006, and moved into orbiting positions at opposite sides of the sun on Sunday. NASA has combined images from … Continue reading

  • February 4, 2011  

    In other news Friday, winter weather continued its assault around the U.S. as bitter cold gripped New Mexico for a fourth straight day. In Dallas, five inches of snow canceled flights ahead of Super Bowl weekend. At Cowboys Stadium, the site of Sunday’s game, six people were hurt by ice falling from the roof. Continue reading

  • February 3, 2011  

    Perhaps you learned a mnemonic device such as the one above to help remember the planets — Mercury, Venus, Earth, etc. — and their order away from the sun. Turns out, we’re going to need a longer mnemonic after the discovery of some 1,200 planets outside our solar system. Miles O’Brien discusses the findings with Jim Lehrer. Continue reading

  • February 3, 2011   BY Lea Winerman  

    A sand dune on Mars changes over the course of two seasons. (Image courtesy Science/AAAS). A Texas-sized field of sand dunes around Mars’s north pole — long thought to be a static, unchanging remnant of the planet’s more active geological … Continue reading

  • February 3, 2011   BY Jenny Marder  

    A Georgetown neuroscientist’s theory on the origins of tinnitus, the phantom ringing that plagues millions of Americans and countless military veterans. Continue reading

  • February 2, 2011   BY News Desk  

    After a widespread shutdown of Internet and mobile phone service in Egypt as street protests intensified last week, there were reports Wednesday that Web access was restored in the country. Google’s Transparency Index has been tracking web traffic to its … Continue reading

  • February 1, 2011  

    Frontline explores the patchwork system of death investigations in the U.S. Varying greatly from the high-tech operations depicted in popular crime shows, these investigations often lack uniform standards, oversight and trained doctors. Watch a preview of an episode airing Tuesday on many PBS stations. Continue reading

  • January 31, 2011   BY Evan Conway  

    With social media helping organize the throngs of protesters taking to the streets of Egypt, we spoke with Mohammed el-Naway of North Carolina’s Queens University of Charlotte, author of “Islam Dot Com,” for some insight on social media and Internet … Continue reading

  • January 31, 2011   BY Jenny Marder 

    Federal guidelines on what Americans should — and should not — be eating were released on Monday. Among them: reduce daily salt intake to less than 2,300 milligrams; less than 1,500 mg if you’re 51 and older, according the U.S. … Continue reading