Denmark will build an artificial island 80km off its western coast in the North Sea. The island will be the size of 18 football fields and cost around $34 billion to build. It will produce enough electricity to power three million homes and help make Denmark carbon neutral. Denmark is Europe’s largest oil-producing country and will end its reliance on fossil fuels within three decades. It is expected to be in operation by 2033 and will help reduce CO2 emissions.