Resumen de Beaver fever
Gold wasn't what drew the first European settlers out West. The California gold rush was preceded by the California fur rush: having exhausted what nature could supply in Europe and in the eastern American colonies, trappers set out in search of new riches. The thick, lush coat of the North American beaver was particularly prized. It was traded for every commodity under the sun, shipped around the world and used to make clothes and hats. Here, Campbell finds out whether nature's engineers could help save California from drought
