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Documents containing text messages between US and Ukrainian officials submitted to Congress Thursday by former US special envoy to Ukraine, Kurt Volker, showed that Sondland was involved in coordinating Washington's engagement with Zelensky's government before and after the presidential phone call. Zelensky, a former comedian, assumed office on May 20.

Director of the Nuclear Research Institute of Ghana, Francis Ofosu, told Xinhua that the nuclear reactor had been very useful for the country as countless number of students had used it over the past two decades for their Masters and Ph.D level research work.

Divided into two parts by a simple yellow line, the village is called Yinjing on the Chinese side and Mangxiu in Myanmar.

DiDi is facing new challengers as several companies, including Meituan-Dianping and Ctrip, enter the ride-hailing market and launch related services, notching up the already intense competition.

Dimitris Metaxas, the chief scientist for smart health at SenseTime, an AI startup in China, points out that the key element in the evolution of the medical sector will be learning algorithms, which will allow humans to gain unprecedented insights into diagnostics, care processes, treatment variability and patient outcomes.