Is there such a thing as clean coal? In this episode, we look at the technologies designed to reduce the environmental impact of burning coal and ask if it makes sense to use coal at all.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices
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