The 6th series of the hugely popular World Challenge strand is currently in production. We’ll be working hard with our partners at Shell, Newsweek and BBC World News to bring you stories of innovative sustainable businesses around the world. And make sure you follow the series by logging on to the World Challenge site – we’ll be asking global viewers to vote for their favourite projects for the £40,000 worth of prizes. We’ll also be blogging regularly about the series, so subscribe to our blog RSS feed and stay in touch with our producers as they film around the world. BBCWN Schedules.