. >> sreenivasan: finally tonight, could mining a rock found in remote greenland help curb climate change? past pristine fjords and glacier-covered mountains, a mining company is hoping that this patch of southwestern greenland could be a key to producing industrial material like fiberglass and aluminum in a much more environmentally- friendly way. ( explosion ) they are searching for anorthosite. >> this rock is created at great depth. generally, it's an ordinary rock, but the chemistry here is unique. it is created in the early days of the formation of our world. >> sreenivasan: geologist anders norby-lie has been exploring anorthosite here for almost a decade. while it's found all over the world, he says the rocks here are more pure, and can be turned into aluminum with less waste and with less energy, compared with bauxite ore, which is the primary sour of aluminum now. the mine being developed here is still a few years from being fully operational, but the newly-elected government in greenland is hoping that anorthosite can be part of a plan to position this mineral-rich island as en