Prolonged sitting can lead to chronic diseases, researcher finds

February 19, 2013 03:58 PM

UPDATED February 19, 2013 04:11 PM

More Videos

  • Bright, intensely colored meteors to fill the sky

    What is usually the strongest meteor shower of the year will peak in the night sky between Dec. 13 and 14. NASA explains what you will see. (Video by NASA)