As prices for solar panels have come down, more and more people are putting them up. But those panels have a limited lifespan of 20 to 30 years.
Experts now estimate that by 2050 the planet could be stuck with 78 million tons of used solar panels.
Recycling is not cost-effective, but a University of Virginia professor may be on track to change that as Sandy Hausman reports.
Virginia Public Radio 