Un mapa d'instal·lacions productores d'energia <a href="http://www.washingtonpost.com/blogs/wonkblog/wp/2012/12/08/all-of-the-worlds-power-plants-in-one-handy-map/">http://www.washingtonpost.com/blogs/wonkblog/wp/2012/12/08/all-of-the-worlds-power-plants-in-one-handy-map/</a><br>
<br>Raf<br>