Arriving in Tromso, Norway, we are now located just at the Arctic’s doorstep. It is a quiet strange feeling, when you suddenly stand at the edge of something, that is normally so incredibly far away. If it’s far away from you as well and you derive from that that you don’t have to care – hang on. You actually should, as the Arctic often is referred to as earth’s air conditioner. And on hot summer days without (working) air conditioning, you feel perfectly well what it is good for.

If you look at such pictures of the Arctic region it does not at all like an air conditioning. I was actually suprised that it can be that green in the Arctic region, as I always associate of snow and ice with Artic. What about you?

But this ice is only there in winter time – that’s when it fulfils it’s cooling job, by reflecting 80 percent of sunlight back to space which then cannot heat up the ocean or earth anymore. But from March on, ice starts melting due to increasing temperatures. The decreasing sea ice cover uncovers the dark oceans that absorbs the sunlight instead of reflecting it – the cooling air conditioning turns into a heating facility.

 

So far, the Arctic yet hasn’t been completely ice-free during the warm summer period. But you might remember scientists worrying last summerabout the small area that is left ice covered: The larger the ice free part, the more heat is absorbed by the ocean underneath – in turn, even more ice melts and a vicious circle starts.

Not on the edge of the Arctic, but on the edge of Arctic research, you find scientists working on how this influences the Arctic environment. Sometimes this influence can even be positive: Researchers recently found that microbes in the soil can fix more carbon in a warmer climate.

But yet, researchers cannot tell how Arctic ice cover will evolve, but they work for example on better models to predict what is going to happen. That is especially important, as many earth systems are connected: A warming Arctic sea also affects ocean currents for example, that – connected to each other – span over the whole planet. In turn, oceans take up less CO2 for example, and in consequence more of this greenhouse gas in the air, warms up the whole planet.

Scotland is one of the few nations in the world to have a Minister of Climate Change. We met Paul Weelhouse today at the World Climate Summit 2012 where he discussed the global energy mix of the future. While Qatar, represented by it’s Minister of Energy and Industry, counts heavily on natural gas, Scotland takes a differnt turn. Even though Scotland still is the biggest producer of oil and gas in the European Union and wants to keep this role, the country aims to run on 100% renewables by 2020. To reach this ambitious goal, lots of money and manpower are invested already. Even the mystic sea-monster Nessie takes part in the Scottish developement – but hear and see for yourself.

Paul Wheelhouse, Scottish Minister for Environment an Climate Change @WCS from DW_Global Ideas on Vimeo.

The World Wind Energy Association (WWEA) has some good news for the world market for wind turbines. Not only that the market has recovered last year, it also set a new record: 42 gigawatt of new capacity had been installed in 2011, the worldwide total capacity rose up to 239 GW. According to the WWEA todays wind power would be enough to cover 3 % of the world’s electricity demand. China is the biggest player in the business, says the WWEA. The country installed around 18 GW of new wind turbines within 2011, coming to a total capacity of 63 GW – that’s more than one fourth of the global wind capacity. The second largest market for new wind turbines was again the USA, followed by India and Germany, which grew about 2 GW.

We wanted to share an interesting article we found on the Wall Street Journal today about the costs of going green. Across Europe, towns and cities are investing in sustainable architecture – buildings that run on clean energy, like solar or wind power.

The article says even though we might assume eco-friendly buildings will save on energy bills and increase property values, that hasn’t actually been proven yet. The costs of constructing green buildings is in itself quite expensive, and it’s too soon to back up the claim that the investment pays off in the end.

So is Europe moving too fast with its boom in green construction? Or will lower utility bills and higher property value will make up for the costs quickly? Let us know what you think…

Making your own wind turbine might seem like an impossible feat, even for an expert DIY-er. But according to one man in the U.S., it's not all that hard. Mike Marohn from the state of Washington came up with an at-home wind turbine as a way to heat his water. And it turns out, it's not that expensive or complicated. All it takes is a little shopping at your local hardware store and online!

 

His creation is called the 'Zoetrope,' and it's a vertical-axis wind turbine made from ordinary things like a stove pipe and plastic sheeting. And the best part is, Applied Sciences has decided to make the Zoetrope open source–meaning they've made the instructions available to everyone on their site, from the manual to a special video. So you can take those instructions and use them to build your own Zoetrope wind turbine, adjusted to the conditions where you live.