Seed-firing drones are planting 40k trees every day to fight deforestation
I very much doubt many of these seeds will be successful.They say that it's more efficient to use a drone than to manually plant a tree or seed.  Yes, blasting seeds out of a potato cannon would also be much more efficient if the goal is to spread unsuccessful seeds.  If the goal is to get to a mature tree or forest, then I doubt it's more efficient at all.Forrests are self-sustaining.  But recreating a clear-cut forrest usually requires a bit more care than just chucking seeds around.