Well Well since we're here, I might suggest grabbing a copy of this just-yesterday-released movie that would give you a hint on a few possible ways we are not only going to survive but do good for ourselves : touching many points you brought up, check out Unacknowledged on vimeo: https://vimeo.com/ondemand/unacknowledged
and also check my impression of it here on steemit : https://steemit.com/life/@seccentral/unacknowledged-my-impressions-on-the-not-the-usual-ufo-documentary