la Tierra, ¿una gran mina? -dos libros importantes al respecto

Thanatia -The Destiny of the Earth’s Mineral Resources, por Antonio Valero y Alicia Valero
https://www.youtube.com/watch?v=M6qi4bKRPe0

Extracted-How the Quest for Mineral Wealth Is Plundering the Planet, por Ugo Bardi

http://www.chelseagreen.com/bookstore/item/extracted:paperback