As a special Fourth of July treat, here’s a sampler of some intriguing Web-based graphics related to solar power. Think of it as candy for the eye, brain and spirit. Tracking oil imports over 35 years Led by Amory Lovins, the Rocky Mountain Institute (RMI) has been promoting smarter energy policies and practices for decades. The graphic above comes from RMI’s Flash-video that uses a scrolling timeline marked with key historic events and “pipelines” that change size over time so tha