More ice. Of all the fresh water in the world about 80 percent of it is frozen in Antarctica. About 20 percent of it is frozen in Greenland. That leaves us with less than 1 percent to drink. Of that 1 percent that we have, 1/5th of it is in Lake Bikal in Siberia. If you look on a world map you will see Lake Bikal above Mongolia. If you want to read more about Lake Bikal look in National Geographic. This lake is the oldest and deepest lake in the world. I flew over it a couple times and was never able to see the whole lake as it's so big.