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http://gafw.org/wp-content/uploads/2015/04/UGA4799073-clear-...

>A drone loaded with germinated seeds fires pods into the ground

My reading of this implies the seed ends up underground.

A drone seems like the best answer here to get maximum accessibility and speed. Reaching 100k a day with a wheeled robot would be tricky.

We're really talking fleet of drones vs. fleet of wheeled robots here; wheeled robots, even if slower in deployment, will be able to carry more seed pods (reducing turnaround time) and will be orders of magnitude more energy-efficient - i.e. cheaper to operate and better for the planet.

As cool as flying is, I'm all for ground solutions on this one.

Reforestation scenarios are always very rough terrain. Everything that isn't marketable, which is a lot, is left strewn about.