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Tomorrow from 8:30-9:30 p.m. local time, celebrate Earth Hour! Here's an idea of what other cities are doing

Earth Hour 2013- 8:30-9:30 DO IT

Poster for Earth Hour

Edinburgh celebrates Earth Hour

Earth Hour 2012

Earth Day is April 22nd of each year. Its a day to support a variety of environmental concerns by helping people see what they can do to keep the earth clean and healthy. And it's important that we teach our kids all about the importance of taking care of the earth.

Britain Earth Hour

Celebrating Earth Hour 2010, Canada

Australia Earth Hour 2009 | postage stamp

Earth Hour 2014 - the facts!

earth hour by ~saltyshadow

Sydney and Earth Hour 2012

Earth Hour 2010 - South Africa

Sheila Gilmore MP show’s support for WWF'€™s Earth Hour 2013. They will be joining millions of people across the UK in switching off their lights at 8.30pm on 23rd March to show they support clean, green, renewable energy

Big thanks to Kat Nicholson who is auctioning this drawing - done during Earth Hour by wind-up torch - to raise money for WWF! You can make a bid here http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=321404300104

Our next poster is from illustrator 'Shiv' who prepares us on the eve of Earth Hour with a bewitching image to inspire us to turn our lights out and enjoy the galaxies. #29posters

The Petronas Twin Towers turned off the lights to mark Earth Hour in Kuala Lumpur

How to Participate in Earth Hour -- via wikiHow.com

These fun Earth Day crafts will help your kids learn more about the Earth and just how important it is that we care for this home we all share.

We’re handing our Instagram account over to the Earth Hour global community, to inspire one another to go beyond the hour everyday. Tag your shots #YourPlanet to be featured on our wall and our Facebook page. They can be Earth Hour images, or any shots that envision a more sustainable world. Everyday we’ll select an image, so let’s see the world unite to protect the planet.

Easy ways for a girl to live green: Earth Day Infographic.