Preventing heat islands is a priority for the future of our cities

Between the city and the countryside, the temperature differences are on average 4 to 5 degrees. Credit: EPFL/A.Herzog The summer of 2022 was: the series of heat waves between June and August provided a glimpse of how climate change will make cities arduous places to live in the summer months. That’s especially true in the … Read more

Stop the endless expansion and work with what our cities already have

CC BY” width=”754″ height=”530″/> Credit: The Conversation/CC BY Australian cities are good at growing—for decades their states have relied on it. The need to house more people is used to justify expansion out and up, but it is the rates, taxes and duties that flow from land transfers and construction that drives the endless development … Read more

how to renew our suburbs for more liveable, net-zero cities

by Peter Newman, Giles Thomson, Peter Newton and Stephen Glackin, The Conversation Our aging cities are badly in need of regeneration. Many established residential areas, the “greyfields,” are becoming physically, technologically and environmentally obsolete. They are typically located in low-density, car-dependent middle suburbs developed in the mid to late 20th century. Compared to the outer … Read more

Why cycling lanes should be on the fast track for cities

Contrary to the urban myth, cycling lanes actually help ease traffic congestion. Credit: Shutterstock You might’ve noticed more cycleways rolling out around town recently. Whether it’s a designated path alongside a main street or spray-on white lines and traffic cones cordoning off a portion of a back street, these car-free paths for cycling fans are … Read more

California cities ban new gas stations in battle to combat climate change

Credit: CC0 Public Domain Without realizing they were starting a movement in green energy policy, leaders of a small Sonoma Valley city seem to have done just that when they questioned the approval process for a new gas station—eventually halting its development and others in the future. “We didn’t know what we were doing, actually,” … Read more

Satellites zoom in cities’ hottest neighborhoods

Spend time in a city in summer and you can feel the urban heat rising from the pavement and radiating from buildings. Cities are generally hotter than surrounding rural areas, but even within cities, some residential neighborhoods get dangerously warmer than others just a few miles away. Within these “micro-urban heat islands,” communities can experience … Read more

Most major US cities are underprepared for rising temperatures

Credit: Unsplash/CC0 Public Domain This month, Denver, Las Vegas and Phoenix all posted record high temperatures. And across the nation, Americans are ramping up for a scorching summer. Yet despite more frequent and intense heat waves on the horizon, cities are underprepared to deal with the challenge, according to a UCLA-led research team. Their new … Read more

To refine water forecasts, Western cities map snow by plane

Credit: Pixabay/CC0 Public Domain At a tiny airport surrounded by mountains, a three-person crew takes off for the inaugural flight above the headwaters of the Colorado River to measure the region’s snow by air. Under the plane is a device that uses lasers, cameras and sensors to map snow and help drought-prone communities improve forecasts … Read more

African cities can do more to protect children from climate change

Cape Town, South Africa. Credit: Unsplash/CC0 Public Domain Six in 10 people will be living in cities by 2030. This is concerning. Cities are responsible for over 70% of global greenhouse gas emissions. Yet cities can also do a lot to mitigate climate change and help people adapt to its impacts. Cities can use renewable … Read more