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 ...
Now it's lasers vs. lightning in a showdown to find out which one is more destructive. With a series of tests, the CrunchLabs crew declares a champ. Actor Macaulay Culkin joins Mark as he unleashes ...
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