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A second person identified with Ebola has died in the border city of Goma in eastern Democratic Republic of Congo. There are also reports of a third infected case in the city.

Democrat presidential hopefuls have been facing off in a second night of debates. The party’s front runner – former Vice-President Joe Biden shared the stage with California Senator Kamala Harris and ten others.

Engineers have created a biometric contact lens which can zoom in or out when the wearer uses their eye muscles or even, for example, just blinking twice.