compelling question: "Can I stand on liquid mercury?" So, naturally, he answered it with an experiment posted on his Cody's Lab channel. Liquid mercury is a mesmerizing substance that's also potentially poisonous to humans. Cody wanted to keep the heavy mercury completely corralled, so he placed a reinforced plastic-lined box inside an industrial-strength plastic tub. He filled the box with 640 pounds (290 kilograms) of liquid mercury. According to the University of Illinois at Urbana-Champaign, liquid mercury has a density 13.6 times that of water. Is that enough to hold up Cody's body weight? https://www.cnet.com/news/mercury-stand-float-codys-lab-video-liquid/