A 3.5-billion-year-old organism that still has lessons to teach the human cell.
Aphanizomenon flos-aquae — AFA — is a wild freshwater microalgae, classified as a cyanobacterium. It is one of the most ancient living organisms on the planet, predating multicellular life. Its biology is so dense with bioactive compounds that researchers have spent decades cataloguing what it does — and they're still finding new functions.
Unlike cultivated algae grown in artificial tanks, AFA grows wild in only a handful of pristine alkaline lakes worldwide. Upper Klamath Lake in southern Oregon — fed by volcanic mineral runoff and surrounded by national forest — is the source of every gram of AFA in the New Earth catalog.

