World Meteorological Organization head uses tie to illustrate global warming – video

The head of the World Meteorological Organization, Petteri Taalas, used his tie to illustrate the way global temperatures have increased over the last 150 years. Taalas held his tie up during the press conference when asked about appropriate clothing in hot conditions. Taalas, who is Finnish, said: 'You can see that in the past we had a lot more blue, and today we have more red colour, which indicates the way heatwaves have become more frequent.' The tie's stripes are based on climate data and were initiated by Prof Ed Hawkins at the University of Reading to encourage conversations about climate change. Prof Hawkins called them them climate stripes