We need exposure to sunlight in order to be able to make vitamin D.  Does this mean that humans, like plants, undergo a sort of photosynthesis? Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

How does one telephone wire transfer all of that data?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...