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 ...

Ready for Round 2 between YouTube star Mark Rober and a pack of hungry squirrels? The mechanical engineer's latest video features "Backyard Squirrel Maze 2.0," an ...