Flick your switch off to observe Earth Hour.

Do you want to show you care about energy conservation? Simply switch off your lights tonight, March 28 2009 from 8:30 to 9:30 p.m., local time. Don’t wait for SESB to switch off the power supply; they will do it for you at odd times not according to scheduled Earth Hour. This is Earth Hour, and Saturday is the third annual worldwide event. Millions of homes and businesses and hundreds of major landmarks will go dark for one hour to show that energy conservation is important and to send this message to political leaders attending the United Nations Climate Change Conference in December 2009. At the same time, Earth Hour reminds each of us how easy it is to conserve -- just turn off non-essential lights and electronics to reduce our own power consumption. Some famous buildings will be going dark on Saturday including: The Empire State Building in New York City, the Eiffel Tower in Paris, the St. Louis Gateway Arch, the Sydney Opera House, the Sears Tower in Chicago, Seattle's Space Needle, the Great Pyramids and Sphinx in Egypt, the Golden Gate Bridge in San Francisco, and Broadway theatre marquees in New York City. Malaysia is also observing the Earth Hour but it is not known yet whether the Petronas Twin Tower will go dark tonight for one hour from 8.30pm. Earth Hour is both a symbolic act and the start of a practical habit to conserve energy.And during Earth Hour, what will most participants use for illumination? Candles. The Earth Hour website is filled with announcements – from New Zealand to Hong Kong to Serbia – of restaurants hosting candlelit dinners and clubs holding candlelit acoustic concerts, along with lots of tips on what to do at home during the electricity-free hour, which includes taking a candlelit bath or playing board games by candlelight. Check out some of the recommended tips for saving energy in and around the house all year round. How to save energy around the house From shutting down the electronics and picking up a book (gasp!) to closing your curtains at the right time, here are 21 simple things you can do to save energy, and cash, in your home. What's wasting energy in your home right now A gentle reminder -- with specifics -- to get up and unplug appliances you're not using. Keeping cool indoors If you don't have air conditioning -- or if you want to keep your power bill from going gangbusters -- you still can lower the temperature inside your house or apartment. Greening your home in the right order There is an important order to the steps each of us can take to make a difference. How low can you go? Saving energy while washing the dishes is as easy as pushing a button.