Plastic solar cells, windows that generate solar energy, and ultra-fine water filtration systems with the potential to save billions of lives. Scientists claim that products based on nanotechnology could one day change the world. But what exactly is nanotechnology, and is it safe? By Business 21C correspondent Lachlan Jobbins.

Internet entrepreneur Martin Rushe has looked into the practicalities of filtering content over the internet. He found that not even the People’s Republic of China, with a team of 30,000 people and unlimited resources could make it work.

A discussion on getting through the holiday period without updating the B21C website daily ended up a worldwide word game, with the help of some of the internet’s top celebrities. Mike Hanley & Sheridan Jobbins tell the holiday season story.

UTS Business lecturer Deborah Cotton explains how an emissions trading system works, its pros cons and complexities.

Email was invented before the internet and the web. So what would email look like if it was invented today? Business21C Business Information Designer Scott David reviews Google Wave.

The gap in funding for innovation is below the horizon of most venture firms. Until this is addressed, innovation won’t flourish, says Chris Beare.