Five years after the pandemic started, we look back at some of the most memorable photos that were taken during the global catastrophe. In these images, we see sorrow, pain and desperation. But we ...

Reducing air pollution to levels similar to those during the coronavirus pandemic could protect the glaciers in the Himalayas and prevent them from disappearing by the end of the century. This is ...

Air purifiers are rated based on their clean air delivery rate, or CADR, which can help determine the size of the space they can be effective in. Smith Collection/Gado/Getty Images/File CNN — ...

Cognition Clean Indoor Air Improves Health—What You Need to Know Indoor air impacts infection risk, allergies, cognition, and overall well-being.

A new study of camera-trap images complicates the idea that all wildlife thrived during the Covid lockdowns. By Emily Anthes In the early months of the Covid pandemic, when every bit of news ...

The Pathway to Clean Indoor Air in Victoria could speed up the end of the current pandemic and help us prepare for the next one. But improving indoor air quality won't just bring health benefits ...

(CNN) — Risks from the Covid-19 pandemic and increasingly intense wildfire seasons have sparked interest in air purifiers as a tool to keep indoor air healthy. But experts say they ...