Karl Haas Karl J. Haas, Ph.D. is a UX writer and researcher with a background in ethnography and the arts. He is currently a UX writer at The Weather Channel and content strategist for RebelBase, an EdTech startup. An ethnomusicologist by training, he has studied music and culture in Ghana, West Africa and has taught at institutions such as MIT, Middlebury College, and Berklee College of Music.