Scientists in Canada and elsewhere are studying the use of a technique called stratospheric aerosol injections to reverse the impact of climate change, but social media posts claim this has led to global warming. This is false; the geoengineering technology that uses sulfur dioxide is being researched as a potential way to cool Earth, but experts say it has not been deployed on a large scale. "Stratospheric Aerosol Injections are the root cause of global warming and no snow," says text over a December 28, 2023 Facebook reel with more than 13,000 views.