IDAHO (MT)

5:00 pm 

Fetch! With Ruff Ruffman  "What's Bugging Ruff"  Noel, Sammy and Jay are dispatched to Thompson Island where they learn about insects and their habitats while Harsha learns about powwows in New Mexico. D

5:30 pm 

Nightly Business Report   Tonight on Nightly Business Report, the Federal Reserve says it sees slower growth but lower unemployment over the next few years. What does it mean for you? NBR asks Goldman Sachs' Chief Economist Jan Hatzius. Plus, with planes packed and passengers willing to pay more, airlines are going further to win over high-paying customers. D

5:56 pm 

Newshour Promo   NULL

6:00 pm 

PBS NewsHour   NULL

7:00 pm 

Nature  "The Loneliest Animals"  Scientists work feverishly to breed some of the world's most endangered species in high-security high-tech labs and investigate what forces have led to the demise of entire species. Featured animals include Yangtze turtles, a baby Sumatran rhino, a special collection of lemurs, the Spix's macaw, and a giant tortoise from the Galapagos, the last known specimen of his kind.G

8:00 pm 

Nova  "Smartest Machine On Earth"  This film profiles Watson, an IBM supercomputer, which competed against two "Jeopardy!" champions to prove its ability to mimic the human thought process. The film goes behind the scenes at IBM to provide a firsthand look at the technological feats and hurdles to develop Watson and the challenges artificial intelligence (AI) researchers face.G

9:00 pm 

Secrets of the Dead  "The World's Biggest Bomb"  Beginning in the 1950s, American and Soviet scientists engage in a dangerous race to see who can build and detonate the world's largest bomb. Bomb-makers on both sides are flying blind as they push technology into unknown territory.G

10:00 pm 

How Long Is A Piece of String   It sounds like a simple question. But as comedian Alan Davies discovers, finding the answer involves a journey through mathematics, physics and quantum mechanics via the fundamental nature of the universe.G

11:00 pm 

Charlie Rose   NULL