Picture shows Dr Panagiotis Theodorou from Martin Luther University in Halle, Germany, undated. He urged councils and citizens to mow lawns less often. (NewsX/Bee)
Picture shows the mayor of Montreal, Valerie Plante, in undated footage. She announced that another two per cent of the total area of the city would be turned into green space within the next eight years. (NewsX/Bee)