While I am not a specialist in green technology, I could not help but be depressed by an article in the New York Times Tuesday about China’s rare earth minerals and metals.
The Times and many other papers announced Tuesday that China which “currently accounts for 93 percent of production of so-called rare earth elements” plans to cut its exports of these minerals in order to get manufacturers to open plants in China. Today, China did a bit of backpedaling to reassure the rest of the world that rare earth materials would still be available.
While obscure, these elements and metals are used in a number of green technologies, including magnets for wind turbines and batteries in hybrid cars, and in missile systems.
What especially caught my eye was the Times report that
“some of the minerals crucial to green technologies are extracted in China using methods that inflict serious damage on the local environment. China dominates global rare earth production partly because of its willingness until now to tolerate highly polluting, low-cost mining.
To get at the materials, powerful acid is pumped down bore holes. There it dissolves some of the rare earths, and the slurry is then pumped into leaky artificial ponds with earthen dams, according to mining specialists.”
Western green technology at the cost of extreme pollution in another country. China’s environmental problems, not limited to the mining sector, are well-known. How do environmentalists resolve this moral dilemma? They cannot force China to clean up its act; they cannot repudiate hybrid cars and other green technology. Will environmentalists support development of rare earth extraction elsewhere, like in Australia, California, and Canada? Can green technology engineers find alternatives to rare earth? I will be interested in following how they resolve this predicament.
