Like most cities, L.A. is facing more frequent and extreme heat waves. One new study that mapped out rising heat across the country found that if greenhouse gas emissions continue on their current path, the average number of days in a year across the U.S. that feel hotter than 100 degrees will more than double by the middle of the century. Some cities will have it worst: In Miami, by the end of the century, 153 days each year could feel that hot. Globally, cities that were relatively cool in the past are beginning to grapple with buildings that weren’t built for heat (like Berlin, where the average high in June is 72 degrees, but climbed to 101 degrees one day last month, the hottest June on record for the planet). Cities also suffer from the urban heat island effect: Hot temperatures get even hotter as pavement and buildings soak up and release radiation from the sun. … [Read more...] about Cities are getting hotter, but we can redesign them to keep us cool
Mobile analytics company Streetlight Data released this week its first annual U.S. Transportation Climate Impact Index, a ranking of how carbon friendly the country’s 100 largest metro areas are on several factors: total vehicle miles traveled (VMT), how much people are biking and walking, transit usage, population density, and circuity, which is basically the difference between how far two destinations may be as the crow flies and the route it actually takes to travel that distance by car. “If you have a messy urban road design, you might have people who, because they’d rather get on the highway than drive through town, drive way more miles then they need to to get from one place to another,” says Streetlight Data CEO Laura Schewel. “And that’s another place where you have a lot of potential for improvement.” … [Read more...] about Which U.S. cities’ transportation networks are doing the best for the climate?