The UK's governing body for cycling has said high levels of air pollution in some British cities are further evidence of the need to expand cycling.
It follows a study from the World Health Organisation that found nine British cities and towns had unsafe levels of air pollution.
Martin Key, campaigns manager for British Cycling, said: "With almost daily news stories about worrying levels of air pollution, it is clearer than ever that more cycling is the answer to many of the problems we face in Britain today."
"If local and national government put sustained and targeted investment into improving our roads and making them fit for cycling, we will without doubt create healthier, happier communities and more pleasant places to live," he added.
More top news
Intruder makes a splash at Diving World Series when he leaps into the pool from one of the diving boards in front of an unimpressed crowd.
A massive fast-moving wildfire in upstate New York has ravaged around 800 acres in forests as officials battle to contain the blaze.
Interpol has issued a global alert over the threat posed by the "diet pills" that claimed the life of a British woman.