poisonous gas

  • Hydrogen sulfide hot spring in Iceland

    Hydrogen sulfide

    9 August 2019

    Mike Freemantle finds the connection between Land of Hope and Glory and the noxious, corrosive, flammable gas that stinks of rotten eggs

  • Canary bird in a cage

    Carbon monoxide

    22 August 2012

    Duncan McMillan uncovers the chemistry behind this deadly compound