RIYADH, Saudi Arabia: Spanish biologist Carlos Duarte had been at a Saudi royal palace until three o'clock in the morning, waiting for the country's most powerful man.
Finally in his hotel room, Duarte awoke hours later and noticed an alert on his smartphone screen. It was the palace: He and the other scientists and officials at the meeting on sustainable development should return immediately. Crown Prince Mohammed bin Salman was ready for them.
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