On August 21, the U.S. will experience its first total solar eclipse since 1979. While Californians will only see a partial eclipse, the rare event will darken skies and challenge the electric grid. Amy Quinton reports.
On August 21, the U.S. will experience its first total solar eclipse since 1979. While Californians will only see a partial eclipse, the rare event will darken skies and challenge the electric grid. Amy Quinton reports.