How the Blue Ridge Mountains (Almost) Lost Their Blue

The trees in the Blue Ridge Mountains are responsible for that dreamy blue haze on the horizon. Trees produce fine mists of volatile organic compounds (VOCs), which scatter blue light waves. In the mid-90s, the area had serious air quality issues. Not only was it dangerous to breathe, the hazy blue was disappearing from the horizon. But it wasn't just the trees fault. Here's what happened...
Trailer
Recently Updated Shows

The Daily Show
Hosted by a rotating cast of comedy greats, The Daily Show remains the go-to source for provocative satire, insightful interviews and an award-winning team of correspondents and contributors.

The Librarians: The Next Chapter
The Librarians: The Next Chapter centers on Vikram Chamberlain, a "Librarian" from the past who time traveled from 1847 and now finds himself stuck in the present. When Vikram returns to his castle in Belgrade, Serbia and discovers that it is now a museum, he inadvertently releases magic across the continent. With the help of a new team of eclectic heroes, including a savant in world history, a scientific genius, and a highly skilled Guardian, Vikram has only six months to clean up the mess he made.

LEGO Masters
Based on the hit British reality-competition series of the same name, LEGO Masters brings imagination, design and creativity to life when teams of LEGO enthusiasts go head-to-head, with infinite possibilities and an unlimited supply of LEGO bricks. Teams of two will compete against each other in ambitious brick-building challenges to be crowned the country's most talented amateur LEGO builders. In each episode, the competing pairs who most impress the judges will progress to the next round, until the finale, during which the top teams will face off for a cash prize, the ultimate LEGO trophy and the grand title of LEGO Masters.