A group of US scientists this week proposed an unorthodox scheme to combat global warming: creating large clouds of Moon dust in space to reflect sunlight and cool the Earth.
In their plan, we would mine dust on the Moon and shoot it out towards the Sun. The dust would stay between the Sun and Earth for around a week, making sunlight around 2% dimmer at Earth’s surface, after which it would disperse and we would shoot out more dust.
