Discovery Communications on Wednesday unveiled its latest original video show -- DNews -- available on YouTube, DiscoveryNews.com, Revision3.com and various platforms. Produced by Discovery unit Revision3, the new show offers an offbeat, irreverent take on science news, with three new segments a day hosted by Anthony Carboni, Trace Dominguez and Laci Green. DNews is the latest of more than 40 original video shows produced by Revison3 for Discovery across digital platforms.