Overview: Headlines for May 16, 2016; Noam Chomsky: Climate Change & Nuclear Proliferation Pose the Worst Threat Ever Faced by Humans; Chomsky on Trump's Climate Denialism: He Wants Us to March Toward the Destruction of the Species; Chomsky: Hillary Clinton Fears BDS Because It Counters Decades of US Support for Israeli Aggression; Chomsky on Supporting Sanders & Why He Would Vote for Clinton Against Trump in a Swing State