sunday science session: billions and billions

Carl Sagan was an astrophysicist, astronomer, author, cosmologist and 'science popularizer'. He's amazing, and this series of musical science videos are equally hilarious due to their autotuned voices and 80s editing - and genuinely fascinating. One even features Steven Hawking! This is just a small selection. And I think now, more than ever, learning and appreciating this sort of thing is more and more important. We're all connected, you know?