The FourPro is designed for use with the iPhone 4 and iPhone 4S, and the maximum safe depth that it can go down to is the impressive 100 feet. Interestingly, it was used while shooting a National Geographic documentary on great white sharks, so it is clearly tough enough to suit the needs of amateurs [...]

A new study shows that even when using very simple and inexpensive manufacturing methods – where flexible layers of material are deposited over large areas like cling-film – efficient solar cell structures can be made.A scientific advance in renewable energy which promises a revolution in the ease and cost of using solar cells. The study, [...]