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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 hour by ~saltyshadow

Celebrating Earth Hour 2010, Canada

Australia Earth Hour 2009 | postage stamp

Earth Hour 2014 - the facts!

Britain Earth Hour

Sydney and 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.

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

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

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.

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.

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

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

WWF-UK partnered up with charity Do The Green Thing to release one inspiring #poster a day in the run up to Earth Hour 2014. Let's get started with this one: Poster #1 by Creative Director in Google's Creative lab - Tom Uglow.

The decisions we make today have a great impact on the environment that will exist for our children. We need to exercise judgement in all that we do to ensure we are taking care of the environment. Visit Earth911 for tips on how you can live more sustainably and take greater care of the Earth.