Tomorrow (Saturday 28th March 2009) is Earth Hour, and WWF have sent round a reminder to encourage people to turn their lights off for one hour at 8:30pm. Here’s the gist of their message:
Last call: Tomorrow is Earth Hour!! Please remember to switch off your lights at 8:30pm tomorrow (28 March)!
2848 cities and towns in 84 countries are joining Earth Hour 2009!
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Tomorrow is Earth Hour, and we now have 2848 cities and towns in 84 countries committed! From the Chatham Islands to the Arctic Sea, people from all corners of the world will turn off their lights for Earth Hour to show their concern on climate change – the first global vote for the planet!
In Hong Kong, the Hong Kong airport will switch off the non-essential lighting at HKIA Tower and Airport World Trade Centre for one hour to show their support. More than 500 companies and organizations, more than 1700 buildings are participating across Hong Kong.

Earth Hour really helps in promoting environmental awareness among the young generation;,.