TED (Technology Entertainment and Design)

Afraid to post your child's picture on Facebook? Worried your financial information will be compromised? Experts say we need to decide how we want to interact with each other, consider the importance of privacy to a democracy and take the time to learn privacy settings and rules.

Do-it-yourselfers have made everything from bamboo bicycles to 3-D printers, but nothing as ambitious as the Open Source Ecology project. On a farm in northwest Missouri, tractors and other industrial machines are made from scratch, with detailed plans on how to do it yourself shared online.