Whose Line Is It Anyway? - Season 21

In this workplace comedy, a group of dedicated, passionate teachers — and a slightly tone-deaf principal — are brought together in a Philadelphia public school where, despite the odds stacked against them, they are determined to help their students succeed in life. Though these incredible public servants may be outnumbered and underfunded, they love what they do — even if they don't love the school district's less-than-stellar attitude toward educating children.

Based on an international hit, which already is a viral phenomenon with more than half a billion fans worldwide, and the No. 1 top-trending video of 2017 on YouTube, The Masked Singer features celebrities facing off against one another with one major twist: each singer is shrouded from head to toe in an elaborate costume, complete with full face mask to conceal his or her identity. Ken Jeong, Jenny McCarthy, Nicole Scherzinger and Robin Thicke serve on the panel and play detective, alongside host Nick Cannon.

Zero Day asks the question on everyone's mind — how do we find truth in a world in crisis, one seemingly being torn apart by forces outside our control? And in an era rife with conspiracy theory and subterfuge, how much of those forces are products of our own doing, perhaps even of our own imagining?

NOVA brings you stories from the frontlines of science and engineering, answering the big questions of today and tomorrow, from how our ancestors lived, to whether parallel universes exist, to how technology will transform our lives.

Highway Thru Hell focuses on a team of drivers who work for Jamie Davis, along with several other heavy recovery operations fighting to keep the roads open in some of the most dangerous working conditions ever seen on TV. The Coquihalla and nearby highways through BC's Cascade Mountains have some of the most difficult and fast changing road conditions anywhere. When it's snowing hard up top on the summit of ‘The Coq', 1200 metres below its pounding rain in The Fraser Valley. Add to that, Canada's busiest trucking route to the West Coast, Highway 1 (Trans Canada Hwy), and you have the ‘Bermuda Triangle' of trucking. Police and highway maintenance crews depend on Highway Thru Hell's heavy rescue operators to respond at a moment's notice in the worst conditions. In between the winter storms, the teams ‘off road' skills are put to the test. The rugged terrain near Hope, British Columbia dishes out some of the most unique and challenging recovery jobs over steep cliffs, down deep ravines and even in bodies of water. Highway Thru Hell is ultimately a series about man versus Mother Nature and the toughest men in the towing business being pushed to their breaking point. The stakes are high - lives, the economy and thousands of jobs depend on the highways staying open, and the last line of defense is Heavy Rescue.