The Man-Made, Floating Islands of Lake Titicaca

The Uros tribe in Peru has created a unique lifestyle on floating islands made from reeds. These islands, originally a defense mechanism, are maintained by replacing rotting reeds regularly. The community blends traditional practices with modern technology, using solar panels and hosting a radio station. After a storm in the mid-'80s, the islands moved closer to land, opening up to tourism.

What modern technology do the Uros tribe use to power some of their appliances?

How did the Uros tribe's location change after the mid-'80s?