Iceland, whose land is rich in volcanoes, geysers, and numerous geothermal springs, uses underground heat very efficiently. Until the 20th century, the country was one of the poorest in Europe. Because of the lack of natural resources like hydrocarbons, the state had to buy oil and coal from other countries. At the turn of the century, in the early 20th century, Iceland actively turned to its own natural resources and transitioned from hydrocarbon to an alternative, geothermal energy. That greatly influenced the development of the country, which for some 30 years turned into a highly developed state. According to the 2007 UN report, Iceland was named as the best country to live in the world.