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As populations decline and age across the developed world, compact city strategies, which oversee the consolidation of urban facilities and guide residents toward transit-served hubs, have become mainstream policies. Yet most evidence about their benefits comes from cities that a

Researchers at the University of Hong Kong (HKU) have uncovered a critical, underrecognized trade-off in global environmental policies: While essential for improving public health, large-scale air pollution reductions are unintentionally intensifying warm-season surface urban hea

The world is urbanizing fast. In 1975, about 11% of the global population lived in cities with more than 1 million inhabitants. "Today, we estimate that share to be about 24%," says Andrea Musso, junior fellow at the Complexity Science Hub (CSH) and Ph.D. student at ETH Zurich.

A warm start to winter is part of a global trend of extreme and unseasonable temperatures caused by global heatingMany parts of Australia have already broken early winter maximum and minimum temperature records.In southern Australia, Sydney and Melbourne had their warmest-ever st

Across the United States, the sky will be erupting with fireworks on July 4, 2026, and the days around it as America celebrates the 250th anniversary of its independence. Many cities will be hosting spectacular fireworks shows.

Tens of millions of Americans sweltered under furnace-like temperatures Tuesday as central and eastern cities hunkered down for a heat wave set to last through the July 4 holiday weekend.

Worsened drought stress, changing rainfall patterns, flowers and pollinators thrown out of sync: These only scratch the surface of the ways climate change challenges plant life. But warmer air and higher carbon dioxide levels can also fuel faster plant growth, limit plants' water

Millions of Americans sweltered in stifling heat and humidity Thursday, with dangerous temperatures expected to hit major cities through the Fourth of July holiday weekend.

As temperatures rise around the world, air conditioning is saving lives. But a growing reliance on it is also placing unprecedented pressure on electricity grids, increasing greenhouse gas emissions and making cities even hotter.

Pools were packed and power grids strained as millions of Americans sweltered in stifling heat and humidity Thursday, with dangerous temperatures expected to hit major cities through the Fourth of July holiday weekend.

More than four in five homes and workplaces across 25 European cities have less nearby tree canopy than what is needed for meaningful cooling, according to an open-data analysis by an urban greening expert.

The world's future is in cities. It is estimated that by 2050, 7 out of 10 people will live in urban areas (although a recent CSH study suggests that the growth of large cities may be less dramatic than current projections indicate, it still points to continued and substantial ur