I would love to know the name of the discussion on NPR because it sounds very interesting! I can understand the reasoning behind recommending a chemistry minor/major, but I think it’s interesting that even if biology is different elsewhere we assume that chemistry would be the same. I think life could of course be radically different elsewhere with not only biology being different but also chemistry since there’s still much to be discovered, yet I’m sure it is good to still have experts in both fields to compare what they understand on Earth to elsewhere to begin to grasp how life could exist there.