events). During these times, the oceans may have become anoxic and possibly sulfidic in the deep water. Information about past environments can be gained through studying isotopic, chemical, and biological compositions of modern FGL. FGL is the subject of multiple scientific studies per year. Recent work by Lee Kump at Penn State University has been featured on the television shows Nova: scienceNOW, National Geographic, and BBC relating FGL to the end-Permian mass extinction. References External links "The Underwater World of Green Lakes", video obtained using a robotic submarine by Dr. Mark A. Teece Lakes of New York (state) Meromictic lakes Lakes of Onondaga County, New York