Reuters: The energy big cities burn - mostly coal and oil to power buildings, cars and other devices - produces excess heat that can get into atmospheric currents and influence temperatures thousands of miles (km) away, a new study found.
The so-called waste heat that leaks out of buildings, vehicles and other sources in major Northern Hemisphere cities makes winters warmer across huge swaths of northern Asia and northern North America, according to a report published on Sunday in the journal Nature Climate...