Scientists propose putting reflective aerosols into the stratosphere to reflect the sun's rays. But will this have unintended consequences? Tune in or stream "Can We Cool the Planet?" tomorrow night at 9/8c on PBS: https://to.pbs.org/3dU5zvj | NOVA l PBS

Solar energy has long been touted as the solution to fossil fuel, its affordability making it accessible to all. But even as it helps reduce carbon emissions, its many, little-known flaws and limitations are rising, and quickly becoming impossible to ignore. | Interesting Engineering