science and technology

  • March 14, 2013   BY Rebecca Jacobson  

    Young fans prepare for the Pi Procession at the Exploratorium in San Francisco, holding handmade signs with a digit in pi’s numerical sequence. Photo courtesy the Exploratorium. March 14 is Pi Day, the official celebration of the mathematical constant pi, … Continue reading

  • March 12, 2013   BY Cat Wise  

    On tonight’s PBS NewsHour, Correspondent Spencer Michels and I report on a massive, groundbreaking study underway at Kaiser Permanente and the University of California at San Francisco, which one day may shed light on the genetic roots of health conditions … Continue reading

  • March 12, 2013   BY Spencer Michels  

    Willie Mae Washington, 92, and her daughter Ida are among the 15,000 women in the Oakland area participating in a study on genetic links to diseases like cancer. Photo by Robert Durell. A giant data bank containing genetic information on … Continue reading

  • February 26, 2013   BY Justin Scuiletti  

    From 1990 to 1996, Jim and Jamie Dutcher lived in a tented camp on the edge of Idaho’s Sawtooth Wilderness, where they observed and studied the behavior and social hierarchy of a pack of gray wolves, known as the Sawtooth … Continue reading

  • February 15, 2013   BY News Desk  

    Enjoying the bright Moon’s absence from early morning skies, observers around the world reported lovely displays during the Perseid meteor shower, which peaked Aug. 11 and 12, 2012. Photo by Katsuhiro Mouri & Shuji Kobayashi/NASA. Asteroids, comets – they’re all … Continue reading

  • February 15, 2013   BY Rebecca Jacobson and Ellen Rolfes  

    Travelling at hypersonic speed, the meteor — seen above the city of Chelyabinsk, east of the Ural mountains — exploded and the resulting shock wave smashed windows and set off car alarms. Photo by www.chelyabinsk.ru/REUTERS. A meteor streaking through the … Continue reading

  • February 8, 2013   BY Spencer Michels  

    The Mars “Curiosity” rover’s mission to the red planet has been hailed as a success, so why does NASA want to keep going back to the same place again and again? Scientists at NASA’s Jet Propulsion Laboratory explain. Adam Steltzner … Continue reading

  • February 1, 2013   BY Joshua Barajas  

    Keep your computer safe from hackers. Before you click on a link in an email, ask yourself a few questions: do you recognize the domain name? Is your name spelled correctly in the email? What time was the email sent? … Continue reading

  • January 16, 2013   BY Rebecca Jacobson  

    This is an edited version of a video produced by Jill Granger. To view the original video, click here. Carrie Lewis and Kelly Steele’s fifth grade students slide and spin across the classroom floor, doing the hustle, the robot and … Continue reading

  • January 1, 2013   BY Barbara Fraser and Barbara Fraser  

    A river rises in the Andes and flows east to the Amazon, Ucayali River in Peru. Photo by Bates Littlehales/National Geographic/Getty Images TARAPOTO, Peru — For tropical ecologist Gregory Asner, flying over the Peruvian Amazon from the town of Tarapoto … Continue reading