Mark Rober’s Camp CrunchLabs delivers 12 weeks of STEM toys, exclusive videos, and hands-on learning—an affordable alternative to summer camp.

Camp CrunchLabs is a 12-week virtual summer camp created by former NASA engineer and YouTuber Mark Rober. The camp delivers a new Build Box STEM toy every week for a total of 12 boxes over the summer.

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 ...