From FlipTanedo https://twitter.com/FlipTanedo on Twitter: A banana produces a positron (#) every two hours or so. Thanks @ElizQuill for posing the question. ps. Don't take my word for it, # Thanks to the @BrookhavenLab National Nuclear Data Center for making the data available: https://www.nndc.bnl.gov https://twitter.com/FlipTanedo/status/1074773467872911360/photo/1 https://chirp.cooleysekula.net/attachment/53112