Articles by Sr. Video Producer Daniel Penner
Daniel Penner is Grist's video producer. Follow Daniel


All Articles
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Nearly a hundred years ago, the United States solved a major public health crisis, goiter, by iodizing salt. Surprisingly, it…
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It's complicated, but we figured out some ground rules.
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Lawns suck up water, fertilizer, and time. Here's a look at how we got into this wasteful mess -- and…
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Watch our short doc on Jamie Margolin and Zero Hour, a group of young people sacrificing their youth to fight…