Many in the wider community still see sugar gums as risky trees that drop dangerous branches. But there is much to appreciate and admire about Eucalyptus cladocalyx.
South Australia stands out as having the weakest tree-protection laws, but cities around the nation are losing tree cover at a time when climate change makes them more important than ever.
It’s spring, but many street trees look stressed and sick. Heat and insect attack are arriving early. But our cities are also steadily losing canopy cover.
New research reveals how trees respond to extreme heat. Most trees lose more water than models predict. Some species cope better than others. Access to water will be critical for the hot summer ahead.
Timothy Welch, University of Auckland, Waipapa Taumata Rau
New Zealand’s urban green space has dwindled over the past six decades. The Commissioner for the Environment has issued a warning and a challenge – get greener before climate change gets meaner.
Urban plantings are part of the solution to living in warmer cities, but most tree and shrub species in the world’s cities will struggle too. The impacts on liveability could be huge.
Seen from above, parts of our cities now have very little green space, and we’re losing the green corridors that enable wildlife to move between the remaining urban habitats.
A street fan provides relief on a hot summer day in New York City.
Stephen Chernin/Getty Images
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.
Interstate 980 cuts off West Oakland, Calif., at top, from other Oakland neighborhoods.
Jane Tyska/Digital First Media/East Bay Times via Getty Images
Two urban policy experts explain why taking down highways that have isolated low-income and minority neighborhoods for decades is an important part of the pending infrastructure bill.
Emerald ash borer larva cut these feeding galleries on the trunk of a dead ash tree in Michigan.
corfoto via Getty Images
Biological control strategies curb pests using other species that attack the invader. A biologist explains why it can take more than a decade to develop an effective biological control program.
As a tree scientist who works with urban trees, I can assure you some large, old trees are well worth leaving alone, even you find them annoying sometimes.
Somerset House is an example of enlightenment architecture, which precluded greenery which was believed to obscure its strong lines and go against ‘reason’.
Ed Reeve
Avenues of Honour were planted to remind us of the sacrifice and suffering of our servicemen and women. But as the years wore on, many declined or disappeared.
Tennessee warblers (Leiothlypis peregrina) breed in northern Canada and spend winters in Central and South America.
Kyle Horton
Sleep might be a key factor in the link between greener neighbourhoods and better health. A new study shows living in an area with more tree canopy improves people’s odds of getting enough sleep.