From the shore, dive sites are marked with names on yellow stones. (tourismbonaire.com)
A fancy vivid yellow diamond will be a lot more expensive than a faint or light yellow stone. (creditdonkey.com)
To see if cyanobacteria can pull double duty at hotter temperatures, a team lead by biologists Devaki Bhaya, Anne - Soisig Steunou and Arthur Grossman of the Carnegie Institution in Palo Alto, California, collected samples of Synechococcus from two hotsprings in Yellow Stone National Park. (sciencemag.org)