At this stage, the films on SciCast are skewed a bit too heavily towards physics. We need more chemistry! We need more earth sciences! We need more biology!
"Oh, but," everyone says, "it's so much harder to find ideas for biology demonstrations."
"Pish and twaddle!" we respond (for we really do talk like that at SciCast HQ).
"Let us point you towards this most excellent resource of soil-related activities, Soil-net.com."
A huge and wonderful site. And as my grandfather used to say "Where there's muck, there's cinematic gold."