Cristina Dorador has decided that science is not enough. The Chilean microbiologist’s decades of research have convinced her that the unique ecosystem of her country’s Atacama desert is threatened by ever-expanding lithium mines. She has spent years trying to convince the nation’s leaders to protect the place, with little success.

Now, she’s seizing a historic opportunity: Her election to Chile’s constitutional assembly in 2021 has given Dorador a chance to try to change not only Chile’s lithium industry, but the country’s whole approach to natural resources. But will her endeavor have broader implications for the worldwide shift to renewable energy?

Times are good for Fey Wei Dong. A genial, middle-aged businessman based in Hangzhou, Fey says he is raking in the equivalent of $225,000 a year from trading in the humblest of commodities: sand.