The squirrel ninjas triumph again. Mark Rober may be a former NASA and Apple engineer but the squirrels in his backyard are smarter than his obstacle course. After version 1.0 of the squirrel maze ...

Mark Rober discovered his passion for engineering as a kid, tinkering with gadgets and building creative contraptions. A former NASA engineer turned YouTube sensation, he now runs CrunchLabs, where he ...

What's the most destructive substance on Earth? Lava's the reigning champ - but how do lasers stack up? Mark and his friends are about to find out. Mark ups his backyard obstacle course game to keep ...

Former NASA engineer Mark Rober regularly attracts over 30 million viewers to his YouTube videos, which feature large-scale science experiments, elaborately engineered pranks and environmental ...