For
Trees cool streets and improve air quality.
Against
They cost money to maintain and can damage pavements.
Anonymous excerpts, translated where noted.
“Tree leaves and branches prevent direct sunlight from hitting the ground, asphalt, and building walls.”
“On avenues with large trees on both sides, it felt 5–10 degrees cooler than on streets without trees.”
“Then too much mold grows and it becomes dangerous to walk there.”
“There are lots of utility lines running under streets and sidewalks.”