Researchers have found the first direct evidence that tiny particles of air pollution stick to red blood cells, meaning they can travel freely around the body. Subscribe to our newsletter for the ...

A vibrant aurora display revealing how ionized particles from the sun excite oxygen and nitrogen in different atmosphere layers, creating iconic green and red aurora colors. Auroras, known for their ...

Representative light microscopy images of carbonaceous (black) particles adherent to red blood cells (red arrows) from healthy volunteers. Each image is from a different adult volunteer. Researchers ...