The World from PRX

gold

The new water-based process being used by some independent Mongolian miners can extract up to 80% of the gold from the ore and is much cleaner than processes using mercury or cyanide.
Environment
These Mongolian miners are making gold greener. Now they want their government to help.
neutron star collision
Technology
In a long-ago neutron star collision, scientists find a cosmic goldmine
Nadja Drost
‘The Devil Underground’: Inside Colombia’s Gold Wars
Full Episode