Stacey Baker has always been obsessed with how couples meet. When she asked photographer Alec Soth to help her explore this topic, they found themselves at the world's largest speed-dating event, held in Las Vegas on Valentine's Day, and at the largest retirement community in Nevada — with Soth taking portraits of pairs in each locale. Between these two extremes, they unwound a beautiful through-line of how a couple goes from meeting to creating a life together. (This talk was part of a TED2015 session curated by Pop-Up Magazine: popupmagazine.com or @popupmag on Twitter.)