Three hours to go before lights will go off across the world for Earth Hour, led by Fiji.

Last year 50 million people from 370 cities and towns from 35 different countries took part in Earth Hour, this year 1 billion people and communities are expected to take part.

Suva, the first city in the world to turn off its lights tonight will be joined by many worldwide to address the effects of global warming on our environment.

Even business powerhouse, ANZ Bank said that yesterday they advised their workers to turn off the power at all work stations which include computer monitors.

Meanwhile the National Fire Authority warns those planning to use candles, diyas, tiki torches and bon fires to not leave these unattended.

Acting Fire Chief, Tupou Saubulinayau asks people to take care and put their fire safety first.