Our most powerful 21st-century technologies - robotics, genetic engineering, and nanotech - are threatening to make humans an endangered species.

a few years old but still interesting

Why the future doesn't need us.

"Optical camouflage is a kind of active camouflage.

This idea is very simple. If you project background image onto the masked object, you can observe the masked object just as if it were virtually transparent."

Cool stuff

Optical Camouflage