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About Earth Hour:

Earth Hour is an annual international event created by the WWF (World Wide Fund for Nature/World Wildlife Fund), held on the last Saturday of March, that asks households and businesses to turn off their non-essential lights and electrical appliances for one hour to raise awareness towards the need to take action on climate change. It was pioneered by WWF Australia and the Sydney Morning Herald in 2007, and achieved worldwide participation in 2008.

Earth Hour will next take place on Saturday, March 28, 2009 at 8:30 pm, local time.

Earth Hour 2009:

Earth Hour 2009 is 8:30-9:30 March 28 2009. Currently, 80 countries and 750 cities are 'committed to Earth Hour 2009', a huge increase from people participating in 35 countries for Earth Hour 2008.[31] 1 billion 'votes' is the stated aim for Earth Hour 2009[32], in the context of the pivotal 2009 United Nations Climate Change Conference.

The event was interpreted as tokenism,[33] and some focused on the reduction of carbon emissions, whether the significant reduction in electricity consumption reported occurred at all, and questionable coverage of the event by the media conglomerate that sponsored it. It should be noted that the Earth Hour is very similar to the grassroots Earth Day Energy Fast, which from 1991 to 2007 proposed going completely without man-made energy each Earth Day. Earth Day Energy Fast was folded in 2007 since the campaign's founder claimed it was "too late" for such a campaign to have meaningful impact.

The United Nations Conference on Climate Change in Bali [34] made clear that signatories to the Kyoto Protocol accept that greenhouse gas emissions reductions of from 25 to 40% are necessary by 2020 to reduce the impact of global warming which is causing sea level rise and numerous other problems. In that context Earth Hour is at worst tokenism or at best creating awareness to lead to further steps like switching to green power from sources such as wind power or solar power and away from electricity produced by burning fossil fuels like coal, natural gas and petroleum.

About Climate Change:

Climate change is any long-term significant change in the "average weather" that a given region experiences. Average weather may include average temperature, precipitation and wind patterns. It involves changes in the variability or average state of the atmosphere over durations ranging from decades to millions of years. These changes can be caused by dynamic processes on Earth, external forces including variations in sunlight intensity, and more recently by human activities.

In recent usage, especially in the context of environmental policy, the term "climate change" often refers to changes in modern climate (see global warming). For information on temperature measurements over various periods, and the data sources available, see temperature record. For attribution of climate change over the past century, see attribution of recent climate change.

Other related tags for this page: trees, rainforest, climate change, global warming, natural disaster, deforestation,

[More about Trees and Climate Change from Wikipedia].