David Keith, a scientist at the University of Chicago, has a daring idea to combat climate change by altering the Earth's atmosphere.
He proposes releasing sulfur dioxide high in the atmosphere to reflect sunlight away from Earth, effectively turning down the planet's thermostat.
This controversial approach, known as stratospheric solar geoengineering, raises concerns about unintended consequences and potential risks.
While the idea might seem like science fiction, it is being taken seriously as the effects of global warming become more dire.
