Caltech reactor could convert CO2 into breathable oxygen for space trips

Most oxygen in the universe isn’t in the form that we need to breathe: molecular oxygen, or O2. Now, researchers at Caltech claim to have created a reactor that can turn carbon dioxide into molecular oxygen, which could help us fight climate change here on Earth or generate oxygen for life in space.
— Read on newatlas.com/caltech-reactor-convert-co2-oxygen/59869/