He's doing work with NASA and he's documenting melting ice. He makes gigantic, suitably scaled images that you can't contain in one gulp. They are fascinating from a scalar point of view: how far away are we when we see them? This kind of scale confusion is intrinsic to ecological awareness.
Guariglia is devoted to ecological issues such as global warming--I say devoted because it's certainly a lot more than committed.
This is from the popular US show Science Friday.