The temperature in the Norwegian city of Porsgrunn was around freezing point when EUobserver visited the Norcem cement factory in March, with piles of snow shoved to the side not yet wanting to melt.
By contrast, walking alongside the grey cilinder-shaped contraption felt like opening a pre-heated oven.
It is this excess heat, which now uselessly escapes into the air, which Norcem wants to use to trap something much more harmful which is also being released into the atmosphere: ca...
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