Some of you may remember Iain Stewart’s fascinating series Earth: The Biography, which aired on National Geographic in 2008. Iain is back later this spring to show how the powerful forces that shape our planet have also shaped and molded world history. For instance, his exploration of the benefits of fault lines takes us to the Negev desert. There he explores the 6,000-year-old copper mines of Timna, excavated by hand and so old that they look natural (see above). Again and again cities and eventually civilizations rise around the resources that fault lines offer – water, minerals or even scenic landscapes, such as California’s spectacular coastline. As he did in his earlier series, Iain brings high-def cameras to awe-inspiring natural wonders. Click here to see a clip of his visit to Mexico’s Cave of Crystals and its 30- foot-long natural crystals, only discovered in 2000. Adding impressive CGI and visits to such man-made wonders as the Palace of Knossos and Istanbul’s Hagia Sophia, How the Earth Changed History is another great addition in the biography of our planet.