Neutrinos are particles that hardly interact with other matter; weigh barely anything at all; and have a ghost-like ability to change from one type to another, sometimes making them seem to disappear. So, in many ways, they almost aren't there at all. And yet, these fundamental particles allow the sun to shine, drive supernova explosions, are centrally linked to the essence of all other particles and could help explain how matter managed to survive the cataclysmic birth of the Universe to allow us to exist so that we could talk about them in the first place. Not bad for almost nothing!
This talk will explore some of the paradoxical nature of neutrinos, the experimental challenges to studying them and a few of the new efforts that are underway to use neutrinos as a crowbar to pry open a deeper understanding of the Universe.