We love this made-for-kids series of videos, Circuit Playground, by MIT engineer and Adafruit Founder Limor Fried (in the pink hair) and her robot friend ADABOT. For this excellent DIY project — and to find out what’s going on inside of the batteries that you use — get some lemons, pennies, galvanized nails, some aligator clips, and an LED, then watch their second video in the series, B is for Battery.
Featuring the incredible power of nature, this intense clip from Oceans, a French documentary film by Jacques Perrin (released in the US by Disneynature), shows dramatic footage of several kinds of ships (and a lighthouse) handling some seriously rough seas.
Russell Beard of Earthrise goes on a tour of Gemasolar, near Seville, Spain - the first Concentrated Solar Thermal Power plus molten salt storage (CSP+) plant to produce energy 24 hours per day. This power tower plant produces 20MW, enough to power 25,000 homes but much bigger CSP+ plants are now being in the Middle East and the US that will produce 100MW and 150MW. Even larger CSP+ plants are possible.