Scientist demonstrates just how water-repellent lycopodium spores are

Lycopodium spores repel water so strongly that you can dip your spore-covered hand into water and it will stay completely dry. The hydrophobic spores are highly flammable, too, so they are often used to make fireballs in theatrical performances.

Steve Spangler does some pretty good pyrotechnics with it here:

Image: YouTube / Phil Cook