It's not only Tibet when it comes to the plateau of Tibet, which is 12,000 feet above sea level on average. I think the next big thing is going to be water security in the region. All the downstream countries are facing a lot of problems because China uses Tibet's water as a tap. It has built so many dams. On the Mekong alone, before it flows into the next country, there are some 32 dams. When they let it flow, it causes flooding. Then if it dries up, they will stop it. Water security is going to be a huge problem. Some say this could lead to the third world war. Who knows?
Today we are political refugees, but in a few decades to come there might be so many more environmental refugees. About two billion people, directly or indirectly, depend on Tibet's water, the water that originates from the Tibetan Plateau.