IDAHO (MT)

4:00 pm 

Wild Kratts  "Secrets of the Spider's Web"  When the creature adventuring Kratt Brothers take a nasty tumble, the Wild Kratts sets off on a mission to find and recreate one of the greatest of all biotech engineering secrets. Spider silk. D

4:30 pm 

Cyberchase  "True Colors"  Hacker becomes a good guy! Can this possibly be true? A new, reformed Hacker runs for election against Motherboard, claiming to have done five good deeds, and promising to turn over a new leaf. Can the kids find a counter example that proves Hacker is lying -- or will he be elected the new ruler of cyberspace? Guest voice: Al Roker as "Sam Vander Rom." The Big Idea: When people use words like always, never, all, or none to claim something is true, be suspicious! Such claims are often false, and you need only a single counter example to disprove them. D

5:00 pm 

Fetch! With Ruff Ruffman  "Don't Like Fencing? Try Fencing!"  Ruff is determined to find the lost Helmet of Victory-an old Ruffman family heirloom that is said to bestow success upon its wearer-and Ruff needs success for his show. Unfortunately, Ruff's owner has set up a new picket fence to keep him yard-bound. He sends Liza and Isaac to learn how to pole vault over the fence, and sends Bethany and Talia out to learn everything they can about fencing. D

5:30 pm 

Nightly Business Report   Election day is finally here and Americans across the country stood in long lines to vote for the next president of the United States. NBR's Tom Hudson reports from Florida. Virginia will be one of the first swing states to tally election results tonight when polls close at 7pm ET. D

5:56 pm 

NewsHour Promo   NULL

6:00 pm 

PBS NewsHour Election Night 2012: A Special Report   NewsHour senior correspondents Gwen Ifill and Judy Woodruff co-anchor coverage of election results as returns come in from across the country.G

10:00 pm 

Surviving The Dust Bowl: American Experience   They were called "black blizzards," dark clouds reaching miles into the sky, churning millions of tons of dirt into torrents of destruction. For 10 years, beginning in 1930, dust storms ravaged the parched and overplowed southern plains, turning wheat fields into desert. Disease, hardship and death followed, yet the majority of people stayed on, refusing to give up on the land and a way of life. Liev Schreiber narrates.G

11:00 pm 

Charlie Rose   NULL