WASHINGTON, DC - MARCH 04: U.S. President Barack Obama speaks at an event announcing the nominations of Sylvia Mathews Burwell, the President of the Walmart Foundation, as his budget chief, Gina ...

23 August 2013 KIEL - Would you throw gold, silver, or other precious metals into the trash? Probably not intentionally. But if you have thrown away an old mobile phone, not realizing that it contains ...