Environment How Did China Become The World's Dominant Polysilicon Producer? 6:26am July 06, 2021 by Emily Feng Business Asia Environment Share URL copied to clipboard! Copyright 2021 NPR. To see more, visit https://www.npr.org. 300x250 Ad More Morning Edition National Trump will begin his presidency in delicate position, poll finds by Leila Fadel National Morning news brief by Steve Inskeep 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate