Conversation

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.

https://news.sky.com/story/scientists-propose-controversial-plan-to-refreeze-north-and-south-poles-by-spraying-sulphur-dioxide-into-atmosphere-12697769