Planes fly higher than Everest.

Wacky WorldCars, Trains & Planes

Airliners typically cruise at 10–12 km, where thin air reduces drag and saves fuel.

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<span class="aj-year">1881</span>The Darjeeling toy train is a UNESCO site.Mumbai’s dabbawalas deliver lakhs of lunches with rare mistakes.<span class="aj-year">2002</span>The Delhi Metro is one of the largest metro networks.