Heed old shelter signs? If nuke is REALLY coming, maybe not

NEW YORK (AP) -- A generation of Americans knew just what to do in the event of a nuclear attack - or during a major false alarm, like the one over the weekend in Hawaii. Take cover in a building bearing a yellow fallout shelter symbol....

from AP Top Science News at 9:55 p.m. EST http://ift.tt/2Bab7gv