Engineering cyanobacteria

I like to think of myself as an environmentally-conscious person who tries to save energy and reduce my carbon footprint. But there are times, like now, when I just want to keep my apartment warm enough to wear shorts and not feel guilty for contributing to carbon dioxide emissions. What if we could recover the carbon dioxide molecules that’s produced from burning fuels and quickly convert those molecules back into energy-rich fuel molecules? It’d be a different story.