Former NASA Engineer Devises an Epic Obstacle Course to Challenge His Backyard Squirrels
When YouTuber Mark Rober was stuck in quarantine, he decided to start birdwatching. After buying a bird feeder, however, he discovered that the squirrels got into his “squirrel-proof feeder,” so he bought another model—only for it to be pilfered by the rodents yet again. (And then again.) That's when the former NASA engineer decided to put his expertise to use.











































































