PBB and the 'Poisoning of Michigan' - 50 years later Conference commemorates 50 years since the PBB disaster By Kylie Sczepanski, Midland Daily News Updated May 22, 2023 2:07 p.m.

Here's a look at what really happened. The claim traces back to a decades-old agricultural crisis, when PBB, or polybrominated biphenyl, contaminated the state's farming system in 1973.