Boulder

Aerogels are among the best thermal insulators, but their cloudy appearance doesn't work for windows, one of the worst offenders for letting heat escape a building. Now, researchers at Colorado University Boulder have found a way to make them transparent, recycling a beer by-product in the process.

Blink and you'll miss it, but what appears at first glance to be a large boulder is actually a tiny cabin that contains all the basics you'd need for a short stay in the mountains. The cabin is the work of Swiss firm Bureau A, and was recently installed in a sculpture park in the Swiss Alps.

An artist is shipping a massive 340-ton boulder Los Angeles where it will be featured in his gigantic installation, Levitated Mass

Xcel Energy customers in Boulder Colorado can now benefit from the company's real-time monitoring and management power grid system as the world's first Smart Grid City infrastructure goes live