Blue-green algae cancelled the swim at Ironman Leeds: what it is and why it will happen more often
A day before the start the organisers removed the swim leg: the concentration of cyanobacteria in the lake turned out to be significantly above the threshold recommended by the UK health agency. The race became a duathlon. Here is what blooms, why it is dangerous and how to assess the water yourself.
Ekaterina Gromovaβ’
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