Marine plastic litter tends to grab headlines, with images of suffocating seabirds or bottles washing up along coastlines. Increasingly, researchers have been finding tiny microplastic fragments ...

Microplastics, minute plastic particles less than 5 mm in diameter, have emerged as persistent pollutants across terrestrial, freshwater and marine environments. Their ubiquity has raised significant ...

In the stratosphere, ozone acts as a protective layer. But in the troposphere, at ground level, this colorless gas is incredibly harmful to human health and the environment in ways scientists are ...