YouTube star and former NASA engineer Mark Rober presents an epic science battle to discover what's more powerful: lava or lasers? It's the ultimate science showdown!Based on one of Mark Rober's most popular viral YouTube videos, this entertaining and engaging nonfiction book will showcase an outrageous battle between the powerful forces of lava versus lasers. Which one will win? Readers will learn about the science behind the video as they witness exclusive behind-the-scenes content in seven epic battles that will determine the ultimate champion. Includes over 60 pages of photos!