The Nerdiest Christmas Cards Ever May Be These Microscope Slides Composed of Shells ... These abundant protists date back 540 million years, with around 4,000 species still in our oceans.

Protists are a group of microscopic organisms, unrelated to bacteria, animals or fungi. They’re their own varied collection of tiny organisms, usually only made up of a single cell.

Connecticut College botany professor Peter Siver has been awarded a National Science Foundation (NSF) grant to synthesize decades of research on protists—microscopic organisms essential to ...