Dr. Richard Davis is an associate professor of ophthalmology at UNC Chapel Hill and a researcher at the N.C. Translational and Clinical Sciences Institute.
Dr. Richard Davis is an associate professor of ophthalmology at UNC Chapel Hill and a researcher at the N.C. Translational and Clinical Sciences Institute. RICHARD DAVIS
Dr. Richard Davis is an associate professor of ophthalmology at UNC Chapel Hill and a researcher at the N.C. Translational and Clinical Sciences Institute. RICHARD DAVIS

Why do strong emotions turn on the tears?

December 29, 2013 08:00 PM

UPDATED June 15, 2015 03:47 PM

More Videos

  • What's Up in the night sky for November 2017

    Catch planet pairs and watch the moon pass stellar superstars! See Jupiter and Venus at dawn, the Moon shine near star clusters, and meteor activity all month long.