In another edition of GT World Watch, our compilation of the weird, wild and wonderful stories of the ‘green’ world, a Swedish company plans to harness the body heat generated by thousands of commuters scrambling to catch their trains at Stockholm’s main railway station and use it for heating a nearby office building.

Real estate firm Jernhusen AB believes the system can provide about 15 percent of the heating needed for a 13-storey building being built next to the Central Station in the Swedish capital…About 250,000 people pass through the station every day, warming the air inside with their body heat. Sundholm said the idea is to have large ventilators in the station suck in the warm air and use it to heat up water, which will then be shipped through pipes to the new office building. The system will cost about 300,000 kronor (euro32,000; US$47,000) to install, he said.

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