Rank #67
Use a solar-powered drone.
This description is for a solar-powered drone, a device that utilizes the power of the sun to fly. It is a lightweight, efficient, and cost-effective way to explore the skies. This drone is equipped with a solar panel that captures sunlight and converts it into electricity, allowing it
From Wikipedia
Solar-powered aircraft are electric aircraft that can be an airplane, blimp, or airship and use either a battery or hydrogen to store the energy produced by the solar cells and use that energy at night when the sun isn't shining.