Purple Earth Hypothesis suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for ...

Researchers at the University of Tsukuba have reported on the structure and light energy transfer efficiency of a protein complex crucial to the photosynthesis of purple sulfur bacteria thriving in ...

During guided outings in a small motorboat along a Malaysian river, we would also see purple herons, endangered storks, and — a highlight of the trip — an orangutan.

This yellowing of leaves is sometimes confused with a nutrient deficiency disease called iron chlorosis, especially in the ...

A new study reveals that entacapone, a drug used to treat Parkinson’s disease, significantly disrupts the gut microbiome by ...