cube

They held various scientific experiments for viewers including how an ice cube melts quicker on a metallic surface than a plastic one.

"One microgram per meter cubed might sound fairly small, but we have to think about how people are exposed to wildfire smoke," Casey said.

It has an aluminum frame to hold it together, and it has electronics inside, but the sides of the cube are made of wood.

“Feel like a woman, wear a dress” was written on the cube.

Ghale said many of his colleagues have their eyes on a tactical vest lined with panels of ice cubes that would help regulate their body temperature, but few can afford the price tag.