“…the city’s Department of Housing and Public Works described how it would work. The air force will use cement powder, dry ice or silver iodide to spray the clouds from Nov. 15 to March 15 — and only to prevent “very big and serious snow” from falling on the city, said Andrei Tsybin, the head of the department. This could mean that a few flakes will manage to slip through the cracks. Tsybin estimated that the total cost of keeping the storms at bay would be $6 million this winter, roughly half the amount Moscow normally spends to clear the streets of snow.

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