Cosmic rays are made primarily of protons with a few electrons sprinkled in, and they can reach energies even higher than ...

There has long been a debate over which of the many sources of Houston pollution produces the most cloud-forming particulate matter.

Around the world, some 1. 5 billion tires are produced each year, and tire-wear particles are increasingly recognized as one ...

First high-resolution global exposure map shows about half of the excess deaths from ultrafine particle pollution are due to ...

Ultrafine particles (UFPs) –smaller than 100 nanometres and invisible to the naked eye—contribute substantially to illness ...

While particulate matter air pollution from human activity in transportation, households and industry is decreasing in Europe ...

Wildfire smoke can contaminate the air inside a home, but there are measures you can take to make your indoor environment ...

When the air is smoky from burning wildfires, health experts say to stay indoors. But there are steps you should take to keep ...

Scientist Cassandra Rauert, who built a plastics-free lab to study human exposure, on the challenges for researchers—and ...

You've already inhaled thousands of microscopic particles today. Some will be dust, pollen or soot, and some will be plastic. Microplastics—tiny fragments shed from clothes, tires or packaging—have ...

Wildfire smoke contains tiny PM2.5 particles that can pose serious health risks. Here's how you can compare prolonged smoke ...

Some animals are able to use iron-based magnetic compounds such as magnetite to detect and navigate via the Earth’s magnetic field – a sense called magnetoreception. We considered magnetism in the ...