It's probably fairly unlikely that you have access to sharks, a shark cage, and a large bucket of blood. But if you do happen to have all those things, you should still avoid trying this one at home.
In the video above, former NASA engineer turned YouTuber Mark Rober works with the Discovery Channel team for Shark Week to devise an experiment to test which substance sharks are more attracted to: fish blood or human blood. OK, so for obvious reasons, Rober uses cow blood as a substitute for human, but Rober assures us that "all mammal blood essentially smells the same to sharks" so the results will be unaffected. Read more... More about Sharks , Mark Rober , Culture , and Web Culture