Isn't that how Snowpiercer begins?Scientists propose controversial plan to refreeze North and South Poles by spraying sulphur dioxide into atmosphere
A fleet of 125 military air-to-air refuelling tankers would release a cloud of microscopic sulphur dioxide particles at an altitude of 43,000ft (13km) and a latitude of 60 degrees in both hemispheres, slightly shading the Earth's surface beneath.news.sky.com