288
Generate shadows without trees: vegetable awnings, a new way to generate shadows in the city.
(www.singulargreen.com)
I found these kind of cool as an idea, as they can be added rather easily to existing cities and provide some greenery without taking up space, while providing shade:
Also narrow streets do not shade, when you have sun shining from above, which happens every day at noon.
...in the tropics, sure