Trees matter, a lot. Looking at them helps us revitalise our tired brains and they help keep temperatures, and stress levels in check just for starters. Writing about trees in Paris, Vivian Song (“Admiring the Trees of Paris, https://www.nytimes.com/2022/08/09/travel/paris-trees.html ) shares in The New York Times that “the city’s trees — from the dramatic weeping willows and their trailing fronds along the Seine to the military rows of London plane trees that line the Champs-Élysées — play an underappreciated supporting…