A Week on Earth Whodunit! In this episode we explore the controversy around the push for electrification of the USPS mail fleet. Featuring Katherine Garcia of the Sierra Club, Britt Carmon and Frank Sturges of the NRDC, University of Michigan scientist Max Woody, and, the "evil postmaster general" himself!

Also, the brothers reminisce about the time Donnie crashed his car into mailboxes, and a roundup of the week's environmental news.