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Amina Mohammed, UN deputy secretary-general, said via video teleconference that the debate is a "historic" event, given that Afro-descendants still faced poverty and structural racism.

Among other goals, it expects sales of electric, plug-in hybrids and fuel cell cars in the nation to reach 2 million by 2020, and such cars are to account for 20 percent of all auto sales by 2025.

Amazon’s delivery drone flies in California skies with Blue Origin’s New Shepard spaceship in the background. (Amazon via Ben Fox Rubin / YouTube)

Amid all this rush for homes abroad, Chinese parents are becoming more cautious and rational in their investments, and underlining service. Mi of Kay & Burton said: "Instant decisions of the past have made way for well-considered choices preceded by viewings of four or five homes."

Amazon’s situation is unique in many ways, but its reliance on the cloud for profits during the pandemic reflects a common pattern for tech companies.