Officials say that on hot days they'll be handing out more than 300,000 bottles of water and 200,000 cooling hand wipes to help the capital's commuters stay comfortable. They'll also be giving out 11,000 hand-held fans, a statement on the metro's official website says. It doesn't specify³ how hot it must be for the items to be made available. Russiahas endured regular summer heatwaves in recent years. In 2010, Moscow saw temperatures rise to 40℃ with heavy smog, and other parts of the country experienced wildfires.

 

Metro officials are also trying to cool down station buildings by leaving the doors open overnight while trains aren't running. For the past week, 11 stations have tested out the plan, and seen the temperature drop by 5℃ to 7℃ compared to nights when the station doors were shut, the statement says. Moscow's underground is one of the busiest in the world, with 196 stations serving more than seven million passengers per day. The network's older trains rely on windows for ventilation, although they are gradually being replaced by newer, air-conditioned carriages.

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