Samsung officially announces the Galaxy S7 and S7 Edge at Mobile World Congress. What improvements has Samsung made to their Galaxy devices? LG G5 also announced the G5 at MWC. Is the ability to swap batteries make it a must buy? Boston Dynamics shows of their latest version of it's humanoid robot Atlas. Is this the beginning of the end of human civilization? Plus Facebook makes it easier to wish your friends happy birthday by video and Siri could be coming to Mac later this year.