Monthly Archives: December 2019

Your train is on time thanks to big data

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While most Dutch trains arrive on time — 92.6 percent, to be exact — some delay is inevitable. Falling leaves can make the railway slippery. Snow sometimes causes the railroad switches to freeze up. Machinal issues, on the other hand, such as broken doors or overheated brakes, can increasingly be Read More

How to recognize an alien when you see one

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What would convince you that aliens existed? The question came up recently at a conference on astrobiology, held at Stanford University in California. Several ideas were tossed around – unusual gases in a planet’s atmosphere, strange heat gradients on its surface. But none felt persuasive. Finally, one scientist offered the Read More