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Amazon’s third private label furniture brand, Ravenna Home, launched late last year. (Amazon screenshot)

Among the 11,000 surveyed, 33 percent thought that China would become the world's largest economy, a large increase on previous years.

Ammonia, composed of hydrogen and nitrogen, is already produced en masse from fossil fuels and exported worldwide to make fertilizer. It maintains a liquid state at around minus 33 C, meaning it is much simpler and cheaper to transport than liquid hydrogen at minus 253 C.

Amazon’s Jeff Wilke, CEO of the company’s Worldwide Consumer Business, made one of the biggest announcements of the week, unveiling a fully-electric drone that can fly up to 15 miles and deliver packages under 5 pounds in less than 30 minutes. Wilke also showed the array of different sensors that are built into the drones, in an effort to ensure safety during deliveries.

Ameesha Chauhan, who is in a hospital in Kathmandu recovering from frostbite she contracted during crowded conditions, told AFP that climbers without basic skills should be barred to prevent a recurrence of this year's deadly season.