Lake Baikal, located in Siberia, is the largest lake in the world, containing around 20% of the world’s fresh water alone! Dr. Doug Williams of the University of South Carolina, who is collaborating with scientists from Russia and a few other countries, believe Lake Baikal holds the answers to the mysteries of global environmental change. They wish to look at the lake’s geologic record, and compare that to the modern environmental changes happening today. The only other places with climate records going back around 25 million years are the oceans, and perhaps the East African rift lakes. In order to find the answers they are looking for, they must use submersibles, and experimental deep underwater drilling equipment.