Watch these exciting dry ice experiments (pictures) - CNET

If dumping dry ice in your swimming pool doesn't sound thrilling enough after watching these videos, how about dropping some dry ice bombs instead? YouTube user TheBackyardScientist explains how to create underwater explosions using dry ice bombs. In this video from 2015, get the lowdown on how to make these dry ice bombs -- just fill an empty plastic bottle with broken pieces of dry ice, add a weight, screw on the top, and then quickly throw into the swimming pool. During the experiment, TheBackyardScientist strongly cautions that people not be swimming in the pool when the dry ice bombs explode.