Cities and towns throughout the world will turn off their lights at 8.30pm for an hour of darkness.

WWF-Australia CEO Greg Bourne said Earth Hour gave people the chance to make a strong statement that they were concerned about the environment and that they were committed to taking action.

``This year Earth Hour will focus on broader aspects of sustainability, giving everyone something to do beyond the hour of darkness,'' he said.

``We're asking people to go beyond turning off lights and make an Earth Hour resolution to start something bigger.

``Switching off your lights is a great first step, but your true environmental impact is much bigger than just your energy bill.

``Your environmental footprint is made up of things such as the food you eat, the transport and housing you choose, and the goods and services you buy.''

WWF has developed a footprint calculator that enables people to work out the size of their environmental footprint, with hints on how to reduce it.

Details: www.earthhour.org/

Do you have something special planned for Earth Hour this year? Contact Michelle Burrell at the Camden Advertiser on 46555151 or email mburrell@fairfaxmedia.com.au.

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