8 things you can do right now to cut back your water use

US megadrought: How behavioural ‘nudges’ could stem the water shortage

Material separates heavy water from ordinary water

Moonbows, like normal rainbows, are an optical phenomenon caused by light being reflected and refracted by atmospheric water droplets. However, because the moonlight that produces moonbows is much fainter than direct sunlight, they occur less than 10 percent as often as normal rainbows.