In this video segment adapted from NOVA scienceNOW, learn about concussions—a common type of traumatic brain injury. Hear from Reed Snyderman, a young athlete who describes his personal experience with concussion. In addition, meet Dr. Jam Ghajar, a neurosurgeon and international expert in brain injuries, who explains why concussions are difficult to diagnose and demonstrates a new tool that can help assess brain injury. The portable tool measures disruptions in attention by tracking eye movements and offers a way to quickly and objectively diagnose concussions, even at a sporting event. This video is available in both English and Spanish audio, along with corresponding closed captions. CREDITS: https://www.pbslearningmedia.org/credits/oer09.sci.life.stru.braintrauma/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-section-3c-of-terms-of-use-download-and-share/
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The theory of how the Grand Canyon was formed is shown in this animation from NOVA, and features rare footage of a phenomenon known as debris flow. CREDITS: https://www.pbslearningmedia.org/credits/ess05.sci.ess.earthsys.canyon/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-secti
In this video from NOVA’s Sun Lab, learn about the Sun’s ever-changing surface and magnetic field. Images and animations illustrate how the Sun’s magnetic field lines are affected by the motion of the Sun’s plasma. Over time, the magnetic field becomes twisted and more complex, which increases solar
In this video from NOVA’s Sun Lab, learn about the Sun’s composition and structure. The Sun is a plasma, primarily made of hydrogen with smaller amounts of other elements. Animations and images illustrate the physical and behavioral properties of the Sun’s six regions: the core, radiative zone, conv
