Throughout the last century major technological developments have been made and learning how to harness Iceland's vast natural resources in an environmentally friendly way has made Iceland a leading nation in clean energy. Travelling around Iceland you will find a geothermal heated outdoor swimming pool in almost every town and village, taking a dip in the natural hot water is something we recommend to all tourists. The renewable energy of Icelandic waterfalls and rivers supply the country with an abundance of clean energy in the form of electricity and Iceland's primary source of income, the centuries old fishing industry, is strictly regulated by the Icelandic government to preserve the natural balance of the oceans. Today Icelandic businesses also look towards a different horizon, namely the tourist industry, offering everything from tours to accommodation, and car hires to traditional hand knitted sweaters made from Icelandic wool. Many of these Icelandic products are available all over Iceland or through online stores.