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An Amazon delivery drone flies around the MARS conference in Palm Springs, Calif. (Jason Johnson via Periscope)
An Amazon Web Services ad at SeaTac airport in the Seattle area (GeekWire Photo / Todd Bishop)
Among them, vaccines from China's CanSino Biologics Inc, US biotechnology company Moderna Inc and British pharmaceutical giant AstraZeneca Plc are already in clinical trials.
An employee checks extraction equipment at the Jimsar shale oil field in the Xinjiang Uygur autonomous region. [Photo by Hu Huhu / Xinhua]
An Amazon Wind Farm in Texas. (Amazon Photo / Jordan Stead)
