A new film charts the voyage of an all-women crew who crossed oceans to sample microplastic pollution.

Nanoplastics are the smallest microplastics, far narrower than a human hair. Very little is known about their composition, structure or how they break down in the environment.

But how the world will get to zero pollution is still uncertain – and production caps are untested.

Since coining the term microplastics 20 years ago on May 7 2004, Richard Thompson reflects on the progress being made to halt plastic pollution.

Negotiations for a global plastic pollution treaty have hit on production limits for the first time.

The treaty focuses on ending plastic pollution, not eliminating the use of plastics. But some countries are more ambitious than others.

Your washing machine is polluting the ocean.

Five reasons to avoid glitter, even on Christmas cards or baubles.

A central question remains unresolved in the draft treaty: Is plastic pollution basically a waste management problem, or can it be solved only with a cap on production?

Media coverage of the dangers of plastic pollution can distract from what is actually needed, says an author.