Brandon, MB (CKLQ) - People world wide will be shutting off non-essential lights to mark Earth Hour tonight.
The annual event was launched in Australia by the World Wildlife Fund over a decade ago.
Participants shut down their lights and reduce use their greenhouse gas emissions for an hour to raise awareness about environmental.
It happens tonight between 8:30 and 9:30 p.m.
You can learn more at the Earth hour website.