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Another payload is the high-performance propellant, developed by the US Air Force Research Laboratory. The "green" and more effective fuel can be an alternative to hydrazine, the highly toxic fuel, according to NASA.

Apart from the kitchen staff preparing fresh food at the back, we saw only two workers in the 1,800-square-foot Amazon Go store during our visit: one at the beer and wine section to check IDs, and another just inside the entrance to greet customers. Workers are also needed to restock shelves and help customers.

Another day, another Amazon shopping event.

Another memorandum of understanding was signed to resume China-Norway economic and trade cooperation, along with others to promote cooperation in health, sports, science and research.

Any conversation or discussion these days centers around the novel coronavirus pneumonia, now dubbed COVID-19, whose epicenter was in Wuhan, Hubei province.