In the battle between a massive prehistoric beast and a fluttering bird, we all know what's destined to come out on top. But in the case of Mastodon, a social network with the potential to take on Twitter, the former just so happens to be the underdog. And yet, it's an underdog with serious spunk.

Samsung on Wednesday announced the Galaxy S8, its follow-up to one of the most popular and best smartphones of 2016, the Galaxy S7.