Caddiesflies spin an adhesive silk underwater to build nets to capture food and build protective shelter. Pictured is that silk magnified. Photo by Bennett Addison.

This week researchers figured out a way for amputees to control prosthetic limbs with nothing but the power of their minds.

They also made matter — as in stuff you can weigh with a scale — out of light! According to Discover blogger Bill Andrews, they basically made light sabers.

This fifteen year old kid made a test strip for pancreatic cancer using antibody-coated nanotubes. Since then, he’s become famous and is figuring out how to deal with the celebrity while remaining a regular kid. If only Miley Cyrus were as cool as this kid… By the way, this is old (from April) but I just discovered it this week, so it’s still technically part of my personal weekly webcrawl 🙂

<— Also, here’s a new idea. A weekly science photo from around the internets. Click on the image for more info on the research behind it.