Scientists find huge trove of rare metals needed for clean energy hidden inside toxic coal waste

Millions of tons of coal ash leftover from burning the planet’s dirtiest fossil fuel sit in ponds and landfills across the US. But this waste may also be a treasure trove for the rare earth elements needed to propel the world toward clean energy.

​ Millions of tons of coal ash leftover from burning the planet’s dirtiest fossil fuel sit in ponds and landfills across the US. But this waste may also be a treasure trove for the rare earth elements needed to propel the world toward clean energy. Read More Breaking News, Latest News and Videos | CNN