Energy

  • What is radioactivity?

    A source of immense energy with a long and dangerous history.

    We owe the discovery of radioactivity to bad weather. French physicist Henri Becquerel was trying to study fluorescen...

    Physics November 27, 2017
  • How solar cells turn sunlight into electricity

    In 2015, around 500,000 solar panels were installed daily around the world.

    Renewables have overtaken coal as the world’s largest source of electricity generation capacity. And about 30% of tha...

    Technology January 25, 2017
  • Generating solar electricity at night

    Mirrors use energy from the sun when it’s not shining.

    One of the biggest issues facing renewable energy has been generating power during periods of unfavourable weather or...

    Energy September 20, 2016
  • Heat: Energy from thermoelectricity

    It may be possible to recycle heat from computers and cars.

    Capturing the heat from your car’s exhaust or your computer and turning it into power has just become a hot prospect....

    Energy May 19, 2014
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