Rusty: Hi, Rusty fans! I bet you think we’re in the sea.
Rhona: But we’re not. We’re in the top layer of Antarctic ice, shrunk to a teeny size.
Rusty: I didn’t think we’d find any life in a chunk of ice.
Rhona: Yet there’s a rich community of incredibly tiny creatures – microbes! Look at them swimming around.
Rusty: But where did all this water come from?
Rhona: It’s melted ice, of course. A tiny lifeform called cyanobacteria caused it. It sat on the ice collecting dust particles–
Rusty: Hey, we have something in common. I collect dust, too, in my bedroom!
Rhona: Shush, Rusty – dust particles and mineral fragments. It bundles them up, which darkens the ice. That changes how the ice absorbs the sun’s rays, and…