Former NASA engineer Mark Rober has made a career out of turning scientific curiosity into spectacle. From glitter-bombing porch pirates to making squirrel-proof obstacle courses, he is a master at ...

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 ...

Mark Rober had a problem. Squirrels, those jerks, kept stealing his bird seed. His solution? Building an incredibly intricate squirrel-proof bird feeder, which he created using mechanical engineering.