Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride, only to discover they're instant contestants on Discovery Channel's innovative science-themed game show; hosted by Adam Growe.

Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride, only to discover they're instant contestants on Discovery Channel's innovative science-themed game show; hosted by Adam Growe.

Featured: gummies; ball bearings; fish farming; bronze.

Unassuming Canadians enter the "Cash Cab" as simple passengers taking a normal taxi ride, only to be shocked when they discover that they're instant contestants on Discovery Channel's innovative science-themed game show; host Adam Growe.

Cristobal Colon's maiden project is to dredge and delivery millions of cubic metres of sand from the sea floor to a construction site in Cuxhaven, Germany where a new super-port is being built where the Elbe River meets the North Sea.