Deep dive into plastic monomers, additives, and processing aids User qznc_bot2, in the Hacker News subreddit, 25 Jun 2021
More than 10'000 substances may intentionally be used in plastics, a quarter of which are substances of potential concern. A lack of transparency limits the management of these chemicals. User whelene92, in the Reddit Science subreddit, 23 Jun 2021
ETH Zurich research found over 2'400 substances that are identified as substances of potential concern that are being used in plastic production User giuliomagnifico, in the Environment subreddit, 23 Jun 2021