Author Archives: Mike Koefman

The 21st century case for hydrogen

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Harnessing wind energy to make hydrogen

This is the fifth video in Planet Hydrogen’s exhibit for the COP26 summit in Glasgow. In it, Mike Koefman demonstrates how renewable wind energy can be harnessed to extract hydrogen from water. This hydrogen can in turn fulfil our need … Continue reading

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Guardian fracking debate 30 July 2014

Today’s ‘Guardian’ has an intriguing article by Fred Pearce on fracking, where this very ‘green’ environmental writer comes close to advocating fracked gas as a worthwhile addition to the UK’s energy supplies. Planet Hydrogen, of course, has responded! We speak … Continue reading

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Carbon dioxide – our target gas? Here’s why: see this paper by Professor Pierrehumbert:

Here is a really important paper from one of the world’s supreme climate scientists, Professor Raymond Pierrehumbert of Chicago University. He explains how we must keep our eyes on carbon dioxide, rather than be waylaid by too much attention to … Continue reading

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Professor Joanna Haigh on climate change! Friday 4th July 2014, London.

6:30 pm — 7:30 pm on Friday 04 July 2014 at The Royal Society, London, but turn up at 6.15 pm as this is bound to be a full house for a world renowned climatologist and terrific speaker. Guaranteed to … Continue reading

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Aircraft contrails – how dangerous for the climate? Amelioration possible?

“Environment Research Letters” has just published an intriguing assessment of the harm which high-flying aircraft inflict on the earth’s heat budget – and how a simple rerouting of long distance aircraft, laterally or vertically, could preclude this effect almost entirely. … Continue reading

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Aircraft contrails – dangerous for the climate?

Here is a really interesting update – thanks to the BBC – on a question which has worried climate science for a long time – does the exhaust gas of high-flying aircraft make global warming worse? It is not only … Continue reading

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Would batteries still have a place in this brave new hydrogen world? And what about fuel cells? We always see in the media the yoking together of hydrogen and fuel cells – is there a reason for this?

  As for batteries, yes, we will always need them in some form or another, but only on a comparatively small scale – they simply don’t “scale up” to the capacity which our society needs for town supply or for … Continue reading

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How do you store it?

  Good and necessary question! Certainly, hydrogen will never be able to compete with the way natural gas is stored in nature, dumbly waiting for human technology to access it. However, the supply of water is not in doubt, so … Continue reading

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What are the costs of using hydrogen: how will the bills compare with current fuel prices?

  It will not be cheap! But neither are our present fuel bills – and we must not forget that we are preventing enormous future expense for those coming after us, if we cut right down on the planet-heating emissions … Continue reading

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