Overview

• Botanical gardens can cool city air by up to 5°C during heatwaves, outperforming other green spaces.
• Wetlands, rain gardens, and parks also significantly contribute to urban cooling, with varying degrees of effectiveness.
• The study emphasizes the importance of local factors in determining the success of green spaces in cooling cities.
• Connecting green spaces into 'green corridors' can enhance their cooling effects and provide additional benefits such as carbon emission reduction and flood prevention.
• The research highlights the need for more targeted studies to develop tailored cooling solutions for different communities.