The small, spongy black beads used as fill material in most artificial turf fields are called crumb rubber, which has long been touted as a major win for recycling. However, conflicting studies have alternately identified crumb rubber as either safe for people to play atop or dangerous to human health.
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Lol
“well after thorough testing and analysis, we’ve collectively come to the conclusion that the residual rubber compounds are either safe or unsafe for humans and/or the environment.”
(not actually a quote)