Having removed his shoes and socks, and with his wallet sitting on his stomach, a city office workers stretches out over the lush grass during a hot summer lunchtime in trinity Square in the City of London, England. With feet wide apart and arms spread, the young man is clearly fast asleep under a hot mid-day sun. Risking sunburn after prolonged solar radiation exposure, he is joined by dozens of other co-workers who also enjoy the inner-city heatwave. | In Pictures Ltd./Corbis via Getty Images

Here's How Summers Will Become Hotter Around the World Due to Climate Change

A dozen cities around the world could heat up so much that there is currently no comparison on Earth for their projected summer temperatures.