New research provides new insight into how the immune system is shaped in early life—and why urban children are more prone to allergies.

Researchers examined rodent behavior to show how different populations are related and how their movement spreads leptospirosis.

"As cities continue to expand, we need to ensure our greenspaces are working harder for both people and biodiversity."

Urban trees may bolster education outcomes and their loss could disproportionately affect students from low-income families.

Adding strong evidence in support of "walkable" neighborhoods, a new study finds that the built environment can boost how much people walk.

A new wearable fabric may help urban residents survive the worst impacts of massive heat caused by global climate change.

New research shows that citizen science tools used to gauge heat in many urban areas likely understate the problem of heat islands.

"Our results demonstrate that buildings can directly influence urban air quality due to substantial outdoor-indoor air exchange."

Sinking land may affect nearly 270 million urban residents in China. Researchers say the problem is global, too.

In just the next 26 years, as many as 500,000 people living in 32 coastal cities in the US could experience significant flooding.