government hot lines. what does this mean? >> correct. we talked with one major government hotline. 4,300 people calling in the day after robin williams' death. we have seen a spike in this. in a way could be a silver lining, people who have been struggling with this quite some time are seeking help they need. >> dan childs, thank you, managing editor of our medical unit. thank you. we want everyone to know help is out there. you can call national suicide prevention line at -- 1-800-273-talk. michelle? >> thank you, devin. as we continue on "world news now," robin williams and his many funny phrases. >> good morning, vietnam! >> which is your favorite? we'll look at williams' impact on pop culture. ahead in our next half hour, did you ever want to get away for just an hour or so, to work without interruption or just hear yourself think? we'll look at a new app that takes away your stress. you're watching "world news no