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Former US ambassador to NATO Nicolas Burns tells CNN's Don Lemon what he expects to see from acting Ambassador to Ukraine Bill Taylor and Deputy Assistant Secretary of State George Kent when they testify at the impeachment hearings.

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Hong Kong was hit with another day of turmoil after a man was shot by a police officer and another set alight following a confrontation with protesters in one of the most dramatic days in over five months of protests. CNN's Paula Hancocks reports from the Chinese University of Hong Kong wher…

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Ecovative is growing alternatives to plastic out of mycelium, the root structure of mushrooms. The company says it can make building materials, packaging and potentially even foods that are sustainable and compostable.