Using CO2 for heating and cooling in urban areas

Carbon dioxide is commonly used as an industrial liquid refrigerant but could also be effective in heating and cooling buildings in urban areas. A prototype developed by EPFL researchers shows the feasibility of this concept.

Most major US cities are underprepared for rising temperatures

This month, Denver, Las Vegas and Phoenix all posted record high temperatures. And across the nation, Americans are ramping up for a scorching summer. Yet despite more frequent and intense heat waves on the horizon, cities ...

Study suggests trees are crucial to the future of our cities

The shade of a single tree can provide welcome relief from the hot summer sun. But when that single tree is part of a small forest, it creates a profound cooling effect. According to a study published today in the Proceedings ...

"Urban cold islands" driving plant evolution in cities

A tiny plant is providing big clues about how human development is driving the evolution of living organisms. New research from the University of Toronto Mississauga reveals the first evidence that common white clover changes ...

Hyperlocal Effects From A Changing Climate

Cities are made chiefly of concrete and asphalt, which soak up more sunlight during the day than soil and have a harder time radiating the heat away during the night. Add to that all the energy -- natural gas, electricity, ...

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