Inventor and former NASA engineer Mark Rober teams up with fellow YouTube phenom MrBeast to launch #TeamTrees, a massive online campaign to plant 20 million trees by January 1st, 2020.
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Jimmy Donaldson plants trees.
Mark Rober looks at flying drones.
Mark Rober plants trees.
Jimmy Donaldson (L) and Mark Rober (R) plant trees.
Carlos Cruci, Jenna Tomovich, Joshua Hyman, Tareq Salameh, William Franklin, Chris Tyson, Marcus Pearson, Chandler Hallow, and Jimmy Donaldson pose for a picture.
Grant Canary (L) and Mark Rober (R) check out a drone.
Mark Rober stands on a tree stump.