What is Earth Hour? Earth Hour, a World

What is Earth Hour? Earth Hour, a World Wide Fund for Nature (WWF) initiative, started in Sydney, Australia in 2007 when 2.2 million households turned off their lights for one hour to make a stand against climate change. Today, Earth Hour is so much more than simply switching off lights for an hour once a year. It’s a growing international movement of citizen-driven action for the environment.

When is Earth Hour? This year’s campaign culminates on Saturday, 29 March 2014 at 8.30pm when South Africa joins others around the world – individuals and organisations – in turning off the lights for an hour as an act of symbolic unity. It is a time to reflect on, renew and celebrate your commitments to protecting our planet beyond the hour.

What is this year’s campaign about? Centred on a powerful call to action – How do you honour the Earth? – WWF South Africa is asking everyone to make a promise to honour the Earth by thinking about the choices we make around our food, water and energy use – and understanding our wider impact on the environment. We want people to share these promises online (wwf.org.za) and experience the journey as the virtual planet goes from degraded to beautiful!

What difference will that make? Growing participation in Earth Hour globally has shown that there is an impetus for individuals to take action through better choices for the planet, thus making a collective impact. The power of choice is in our hands through our everyday commitments and consumer selection. Together we can leave a legacy of flourishing ecosystems, healthy rivers, and abundant flora and wildlife.

How can I take part? Throughout March, visit wwf.org.za to make your promise to the Earth. Talk, tweet, post, pin, share, support and spread the word #EarthHourZA


How much warming in the pipeline? Part 1 – CO2-e

Brave New Climate

CO2-equivalents, for all forcings and just greenhouse gases

You may have heard that the planet is committed to further warming and sea level rise, irrespective of what choices we now make to reduce carbon emissions. The global warming century trend that was observed from 1906 to 2005 was 0.74°C (with a 90% uncertainty range of 0.56°C to 0.92°C), with more warming occurring in the Northern over Southern Hemispheres, and more over land compared to oceans. Yet, based on our understanding of the climate impact of greenhouse gases (GHG) such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and other trace gases, we should have observed even more warming than this. Actually, when you put all the pieces together, the expectation is for much more warming.

But before I tackle the critical issue of just how much more warming is still in the pipeline (in another post), it is important to explain…

View original post 2,332 more words