'Harry Potter' books are still flying off the shelves with 500 million copies sold Ifeadi C. 05:56 Mashable, Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsLife-size robo-dinosaur and ostrich backpack hint at how first birds got off the groundA quiet London-based payments startup just raised among the biggest Series A rounds ever in EuropeWhy you don’t want Tumblr sold to exploitative PornhubWatch SpaceX launch an ISS resupply mission and make a drone ship landing tonightActivision Blizzard has five franchises lined up for its new Call of Duty esports leagueEarly Uber advisor Bradley Tusk looks back — and forward — as its IPO fast approaches