CNN — Each year, millions of people from over 190 countries and territories coordinate to turn off their lights for just one hour. The event is part of an annual tradition to raise awareness about ...

Each year, millions of people from over 190 countries and territories coordinate to turn off their lights for just one hour. The event is part of an annual tradition to raise awareness about climate ...

SAN ANTONIO – Turn off your lights for one hour on Saturday and take part in one of the largest grassroots movements in the world. This year, Earth Hour will take place at 8:30 p.m. local time on ...

Millions globally signalled a new awareness of climate change by turning off their lights for an hour last Saturday night. World landmarks – the Sydney Opera House, San Francisco's Golden Gate Bridge, ...