Doomsday Clock Now Two Minutes Until Midnight

What is the doomsday clock and why should or shouldn't it matter? Who are the scientists moving the minute hand on the clock and who is to blame? Are we really going to see the end of the world soon? In short, unlikely.

Article discussed in this episode: http://www.sciencemag.org/news/2018/01/scientists-doomsday-clock-heralds-world-s-darkest-hour