The Canadian Forest Service this week demonstrated new drone technology that plants seeds over large swathes of land. The drones are mounted with a device that resembles a paintball marker, which shoots seeds from a hopper into the ground using pressurized air. The technology can plant as many as 400,000 tree seedlings per day, which is much faster than traditional methods. “Essentially this thing could plant maybe at the rate of one seed every second,” said David Price, research scientist with the Canadian Forest Service. “So if we want to want to plant a thousand trees, in a hectare for example, that would take a few minutes.”