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WWF's Earth Hour is a global environmental initiative, in which people pledge to turn off their non-essential electricity for one hour. This year at least 1,672 cities have agreed to participate, including, for the first time, Hong Kong. Log on to www.earthhour.org for more information. 
Earth Hour may fall on a Saturday night (tomorrow) but for schools that's no excuse not to participate. Here's what some schools are doing today to support Earth Hour. 
1. Canadian 
International School
 lights out between 10.55am and 1.15pm
 turn off all non-essential electricity, including computers
 dress down day for lack of  air-conditioning
2. Beacon Hill School
 only reusable snack and food containers allowed  
 no lifts or photocopying for staff
 Earth Hour video to be shown in the morning 
3. Sha Tin College
 turn off all non-essential electricity every day this week, between 1am and noon. 
4. South Island School 
 a group of Year 12 students have set up an Earth Hour info booth and put posters up 
 Earth Hour video to be shown
5. The Peak School
 each class has committed to turning off electricity for a minimum of one hour 
 one of the Year Four students has created a PowerPoint project  on Earth Hour that he will present in classrooms
6. Bradbury School 
 lights off today between 1.20pm and 2.20pm 
 the school's Green Team has been talking to classes about Earth Hour and has given suggestions as to what classes could do during this hour (for example, reading, playing games, continuing with normal class activities, playing outdoor games and working outside, among other suggestions) 
 students have written a message that will go in the school newsletter this week and one student has written a poem about our responsibilities towards the Earth, which will also go in the newsletter
7. Renaissance College
 holding a two-day No Resources Day, during which the school  will only use what it absolutely  has to 
 lights go off for an hour, and the school will minimise electricity use



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Shoot out the lights