A bottle of water can contain a quarter of a million pieces of plastic, a study has found. Scientists have found a new category of plastic pollution called nanoparticles, which are created when microplastics break down even further. It had previously been impossible to tell how many particles smaller than one micron, one seventieth of the width of ...

Eight researchers told National Geographic that rising temperatures are creating environments conducive to the growth of Naegleria fowleri, a pathogen that causes an acute, life-threatening brain infection.