Poor indoor air on tribal lands can cause a range of respiratory illnesses, including viral infections. Here's how people are fixing the problem while preserving traditional ways.

Exaggerating how much lockdown improved air quality could allow us to underestimate the scale of the air pollution problem.

Being indoors with other people is a recipe for spreading the coronavirus. But removing airborne particles through proper ventilation and air filtration can reduce some of that risk.

Good ventilation can reduce the risk of catching coronavirus. An environmental engineer explains how to know if enough outside air is getting into a room and what do to if ventilation is bad.

From June through October, it's not unusual for huge Saharan dust plumes to blow across the Atlantic. They can darken skies but also bring calmer weather and electric sunsets. Here's how they form.

In South Asia, days with both extreme heat and extreme pollution are expected to increase 175% by 2050. Separately, the health effects are bad; together they will likely be worse.

Yes, poor air quality is bad for your health – but beware simplistic correlations with COVID-19.