Do you want to know what actions Fort Collins mayoral candidates would take for clean air and clean energy, if elected? If you have a couple of hours to devote, you can watch a video recording of a ...

Scientists have struggled to explain the rapid acceleration of global warming over the past 15 years, with temperatures now regularly breaking records. It is “among the biggest questions in climate ...

We asked the experts how to decide. Credit...Photo Illustration by The New York Times; Shutterstock Supported by By Alexander Nazaryan The air we breathe isn’t always clean and refreshing. Nearly half ...

Motorists are being warned they may face higher charges for driving into a Clean Air Zone (CAZ) after research revealed ...