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And in case youre curious, the numbers 18.21 are a mash-up of the 18th Amendment, that started the prohibition, and the 21st Amendment, which ended it

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Regular paper typically contains: Wood pulp fibers Bleaching agents (chlorine or peroxide) Sizing agents (to control ink absorption) Fillers like calcium carbonate or clay Optical brighteners Dyes and coloring agents When burned, these compounds release harmful chemicals including carbon monoxide, formaldehyde, and various carcinogens

Guests: Dr Maki Inoue-Choi Division of Cancer Epidemiology & Genetics, United States National Cancer Institute Host: Dr Norman Swan Producer: David Murray