'Earth Hour' to be observed in Pakistan tonight.

ISLAMABAD -- Like other parts of the world, the annual 'Earth Hour' will be observed in Pakistan on Saturday night under the theme "Give an Hour for Earth".

Million of people across the globe will observe the day by switching off lights for just one hour. A large number of people around the world can reduce carbon emissions by turning off unnecessary lights and electronic devices for one hour to celebrate Earth Hour to protect the environment.

United Nations Secretary-General Antonio Guterres appealed that all the lights be turned off for one hour tonight at 8pm. Under Earth Hour, environmental action would be taken on a large scale, he said.

'We all have to play our role in climate action. I appeal to all the citizens of the world wherever they are to...