Sustainability

Understanding Energy: Reclaiming the air through sustainable aviation

Understanding Energy: Reclaiming the air through sustainable aviation

by Andreas Bock Michelsen

Flying is a convenient mode of transport, but it is also a major contributor to carbon dioxide emissions. The question is, how could we make airplanes run on renewable energy? By considering the basic physics of the problem, in particular the concepts of energy density and combustion, we see what makes jet fuel such a brilliant fuel energy-wise, why batteries are not a likely alternative, and why hydrogen might be the key to sustainable aviation.

Is it really renewable, for peat’s sake?

Is it really renewable, for peat’s sake?

by Lydia E.S. Cole

During the ‘Energy Debate’ panel hosted on Friday 13 November as part of Energy Ethics 2020, it became clear that the challenges of powering the world on renewable technologies were as palpable as the need to overcome them in order to reduce our reliance on fossil fuels; and reducing this reliance is imperative if we are to limit the impacts of ongoing climate change.

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