Isaac Asimov wrote a very detailed and digestible article about E=MC^2 back in the late 50s or early 60s. It was one of the best lay-science articles I ever read. For those thst love physics. It may not want to get into the math and deep into the weeds and theoretical physics discoveries in history that led up to how Al got to his equation, I really recommend the Asimov essay.
He also wrote some fine novels as well, some of which would make for excellent movies and/or series. Andre Norton is another that seems lost to the ages.