From StevenLowette https://twitter.com/StevenLowette on Twitter: Francis Halzen is so captivating! On neutrinos as messengers from the highest energies in the universe. #moriond https://twitter.com/StevenLowette/status/1637494368897572869/photo/1 https://chirp.cooleysekula.net/attachment/ad1b08ffdaaf66bc1bf5e0f042044efb011f59380eaa230333b2746c485bf39e/view