Cities Go Dark for Earth Hour

• Cities around the world marked Earth Hour on 30^th March by turning off lights in a call for global action on climate change.

Earth Hour

• Earth Hour is an annual tradition in which people switch off their lights to spread awareness about sustainability and climate change.
• Started by the World Wildlife Fund, it takes place this year on March 30, from 8:30 p.m. to 9:30 p.m. local time. (And it’s not to be confused with Earth Day, which is April 22.)
• Earth Hour was famously started as a lights out event in Sydney, Australia in 2007.

Aim of Earth Hour

• For the ....