The folks over at University of Toronto’s Solar Fuels Research Cluster may have just gone and saved the planet. Researchers there say they’ve found a way to convert carbon dioxide emissions into an energy rich fuel in a carbon-neutral way. And they’re doing it with one of the most readily available materials on the planet… sand. Silicon nanocrystals are being used in a process said to not only produce solar energy without harmful emissions, but do it in a way that converts the greenhouse gas carbon dioxide into a form of fuel. They’re working on ways of boosting output before starting a pilot refinery. Read more about it here.