Katie Singer 'The invisible, immaterial Internet is not what it seems'
The Human Centered Design Podcast (Premium)
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The Story of Colton
More people have been murdered over coltan than any other single event since world war two. It's actually a combination of cold a columbite and tantalite. When it's refined to a powder, it holds charge. So it goes into batteries in smart phones and electric shavers or other mobile devices. There is so much money involved and so much disruption of people's communities that murders have taken place across Africa.
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