![](https://media.journoportfolio.com/users/31308/images/1be13d5a-b78a-49d3-8cd1-e236700b0fa0_max-600.jpg)
Total Eclipse: Countdown to History
Al Roker and Savannah Sellers look at the excitement building for the total solar eclipse, Neil deGrasse Tyson explains the science behind the phenomena with a surprise guest, and a behind-the-scenes peek at how eclipse glasses are made.