Very hot days in Western Sydney are typically 5 degrees hotter than parts of the city close to the coast and are becoming more common, but only in the west. Four climate drivers explain the difference.
Planting trees in urban areas can reduce the impacts of urban heat islands.
In 2015, 6,700 premature deaths were caused by urban heat – this can be reduced by a third by planting more trees.
Aerial view of a residential neighbourhood with abundant urban forest around it.
Well-designed residential developments with abundant tree cover can help protect cities against urban heat and flooding.
A street fan provides relief on a hot summer day in New York City.
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Extreme heat waves are putting lives in danger, with some of the hottest urban neighborhoods 10 degrees hotter or more than their wealthier neighbors. Often, these are communities of color.
Concrete and asphalt roads, and other built materials readily absorb, store and release heat, raising city temperatures, a phenomenon called the urban heat island.
During heatwaves, the highest temperatures are often found in urbanized areas. Small green spaces are often overlooked as a way to cool urban areas.
Urban gardens, parks and green walls are crucial ways to tackle flash floods and city heat. But new global research finds its effectiveness varies from city to city.
Interior green walls can improve air quality and reduce noise levels, improving the health and well-being of those who work there.
Green buildings can cost more than conventional structures, but the small increase has noticeable benefits for those working and living within them.
Urban parks and waterways are crucial to the wellbeing of city residents.
Yanapi Senaud | unsplash
In cities across Europe, 62% of the population doesn’t have access to the amount of nature the World Health Organisation recommends.
Rising global temperatures are increasing heat risks for outdoor workers and the urban poor.
Ahmad Al-Rubaye/AFP via Getty Images
Hot, humid population centers are becoming epicenters of heat risk as climate changes worsens. It’s calling into question the conventional wisdom that urbanization uniformly reduces poverty.
Part of the answer to a more functional and sustainable city may lie in your garden.
Cities are among the harshest habitats on Earth. But when planned properly, private gardens can help improve their liveability.
Cities occupy just 3% of the Earth’s surface, yet more than half the world’s population live in urban environments. We need nation-wide plans to keep our cities cool so no one gets left behind.
Traffic flows past trees that have been felled to make way for a highway in Nairobi, Kenya on November 12, 2020.
Photo by LUIS TATO/AFP via Getty Images
Parts of Nairobi are already dealing with temperature increases and reduction in humidity. These conditions are associated with increases in mortality, especially in children and the elderly.
Poverty and inequality affect the likelihood of your home overheating during heatwaves.
Buildings soak up the sun’s heat, but research shows that white roofs and surfaces can reduce temperatures inside, particularly during heat waves.
Half-a-dozen strategies are effective for cooling urban areas. Used in combination, these strategies can drop the temperature even more.
Green roofs, like this one in Sao Paulo, Brazil, have many benefits.
South Africa needs to develop low-cost housing solutions that are inherently comfortable and environmentally sustainable. Green roofs could be part of these solutions.
Not all of the solutions to the climate and ecological crisis have to be painful.
There are ways we can stay cool in a heat wave without blasting air con at peak times.
AAP Image/TRACEY NEARMY
The urban heat island and summertime blackouts.
The Conversation 25.6 MB (download)
Today, we're asking why some of the most disadvantaged parts of our cities cop the worst of a heatwave and how you -- yes, you! -- can do your bit to reduce the risk of a summer time blackout.
Children run through an open fire hydrant to cool off during the kickoff of the 2016 Summer Playstreets Program in the Harlem neighborhood of New York, July, 6, 2016.
AP Photo/Ezra Kaplan
Climate change is making heat waves more frequent and intense around the world. Cities are hotter than surrounding areas, so urban dwellers – especially minorities and the poor – are at greatest risk.
Climate crusaders: President Macron, right, with Paris Mayor Anne Hidalgo and former New York City mayor Michael Bloomberg after a June 2 meeting at the Elysee Palace, following the US withdrawal from the Paris agreement.
Christophe Petit Tesson/Reuters
International problems and local policies are integrally interwoven, whether the nationalists in Washington like it or not.