How Reverse Osmosis Will Save the World

# Osmosis and Reverse Osmosis: Making Saltwater Drinkable

In this episode, Josh and Chuck break down the fascinating science of osmosis and reverse osmosis—the technology that's turning seawater into fresh drinking water worldwide. They explore how these processes work at a molecular level, trace the history of how two UCLA engineers invented the first practical reverse osmosis membrane in the 1960s, and explain how this breakthrough has led to 16,000 desalination plants operating across 177 countries today. But it's not all clean water and happy endings—the guys also dig into the environmental downsides, from the super-salty reject streams being pumped back into oceans to the energy costs and emerging solutions being developed to make the technology even more efficient and sustainable.