While toilet bowls are designed such that the contents are supposed to flush downward, scientists have known for decades that ...

Now a new term is gaining attention: nanoplastics. These particles are even tinier than microplastics – so small that they’re invisible to the naked eye. Nanoplastics are a type of ...

"We would like to understand the difference between these systems, which holds the clue to understand just how many cosmic ...

How tiny plastic particles enter the atmosphere is an important question, as airborne microplastics are a potential health threat. Using a global chemical transport model, researchers have provided ...

When a person breathes in smoke, pollutants and other small particles in the smoke get trapped in the mucus and phlegm. This can cause these substances to turn a much darker color. Smoke can also ...