First 'ethical smartphone' takes a big risk

A device billed as the world's first ethically sourced smartphone was unveiled in London this week, but despite thousands of pre-orders its designer says the project remains a huge gamble.

UN backs cassava as future global crop

Cassava has huge potential and could turn from "a poor people's food into a 21st century crop" if grown according to a new environmentally-friendly farming model, the UN food agency said on Tuesday.

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