Self-cleaning windows.

A Reuters story this morning discusses photocatalysts, substances that react with light and oxygen to break down organic compounds, such as soot particles. Coat a wall or a window with these substances, and you’ve got a self-cleaning surface. They’re attracting a lot of attention in Japan, but haven’t caught on elsewhere. I don’t see why not — self-cleaning windows and air-purifying walls sound like a great idea to me!

Self-cleaning windows.

Water-cooled chips.

A company called Cooligy, started by three Stanford mechanical engineering profs, has developed a new liquid cooling technology that keeps computer CPUs cold, helping improve performance. They recently demonstrated the tech running on a notebook computer. How does it work? A 3-D network of tiny canals and a cleverly engineered osmotic pump that pulls water through the system. Wired News reports.

Water-cooled chips.