Have you heard of glyphosate? It's been in the headlines recently because it's the active ingredient in Roundup.
Last week, a jury awarded $289 million to a former school groundskeeper who said Roundup left him dying of cancer.
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The Environmental Working Group, a non-profit, non-partisan organization, found that some popular oat cereals, oatmeal, granola and snack bars come with a hefty dose of glyphosate.
A study commissioned by the EWG found that glyphosate was found in all but two of 45 samples of products made with conventionally grown oats.
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The U.S. Environmental Protection Agency says Roundup's active ingredient is safe for people when used in accordance with label directions.
However, the France-based International Agency for Research on Cancer, which is part of the World Health Organization, classified it as a "probable human carcinogen" in 2015. California added glyphosate to its list of chemicals known to cause cancer.
Check out a full list of the products here.