Children exhale significantly fewer potentially infectious particles than adults -- at least this is true for the small respiratory droplets that are predominantly produced in the lungs. Children ...

Physicists have long struggled to unite quantum mechanics—the theory governing tiny particles—with Einstein’s theory of gravity, which explains the behavior of stars, planets, and the structure of the ...

The fields of virology, microbiology, nanoparticles, and extracellular vesicles (EVs) have grown tremendously over the past few years. Viruses, which range in size from 17 nm to ~1.5 µm, small ...

Aerosols refer to fine solid or liquid particles suspended in the atmosphere, where they reside typically for days to weeks before falling to the ground or being washed out by rain or snow. They arise ...