90-degrees – 50% humidity. Needless to say, it’s hot. It’s the kind of day you’d like to have air conditioning in your car for the four-hour drive from New Haven to Philadelphia. The kind of day that’s too hot for six rounds of unloading my son’s college gear up two flights of stairs into an apartment with no fan. The kind of day when an air conditioned coffee shop with a 12-foot-square living wall packed with ferns is the perfect respite before saying goodbye and taking a train back home.