Cooler still is the method the arm deals with waste heat and steam: just like a regular arm, it's allowed to filter up through a permeable skin, producing "sweat" -- the same amount of perspiration you'd get on a warm summer day, according to the team.

ENGADGET: Rocket-powered mechanical arm might boost prosthetic tech

Apparently, this new filter adds the ability to whiten teeth, widen eyes, soften skin and even overlay a rainy day window or magazine-like layouts to shots.

ENGADGET

It acts as a sunlight filter, shielding life on Earth from harmful ultraviolet rays that put humans at greater risk of skin cancer and cataracts and harm marine life, the agency said.

CNN: Ozone hole grows in 2008