Natural resource investing has a broad scope that encompasses anything mined or collected in raw form. There are a number of reasons why natural resources make attractive investments now and in the future. It includes rising incomes in developing countries that also means an increasing demand for precious metals, building materials, and other natural resources. Another is the ever needed global infrastructure and repair that requires gravel, steel, lumber, and other materials needed to build roads and other public works. Furthermore, many natural resources act as a store of value, particularly the metals.