When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Protists are a diverse collection of organisms that do not fit into animal, plant, bacteria or ...

Organisms whose cells have a nucleus — eukaryotes — have traditionally been separated into four ‘kingdoms’; now they have been reorganized into six. The authors of the revision hope that it will bring ...

Since the Victorian era, categorizing the natural world has challenged scientists. No group has presented a challenge as tricky as the protists, the tiny, complex life forms that are neither plants ...