With CuriosityStream, Discovery Channel founder seeks online success Paresh DaveContact Reporter The founder of the Discovery Channel, an early cable-TV hit, is turning to online streaming with a new subscription service called CuriosityStream.John Hendricks started Discovery Channel in 1982, after watching HBO succeed in the 1970s. He made a fortune and left as chairman of parent company Discovery Communications last spring to pursue his new venture. On Wednesday, CuriosityStream launched with about 600 series, feature-length documentaries and 20-minute-or-shorter clips on science, technology and history.  Access costs $2.99 a month for standard-definition picture quality and $5.99 a month for high definition. The first...