Why can’t humans live off of sunlight?
One of the most common questions I get from non-scientists is, “Why can’t we live off sunlight like plants?” It seems like a weird question at first. After all, what do you mean “like plants”? Plants are clearly alive. But let me explain why this question actually makes sense. Plants have a superpower: they can turn sunlight and carbon dioxide into food! We call this process photosynthesis. How do they do it? Well, it starts…