Ep 16. The Positive Negative Reaction

Howard and Bernadette are preparing for the imminent arrival of their new baby, and Howard is feeling a bit overwhelmed. Meanwhile, Sheldon is feeling left out when he realizes that he's not going to be able to have children himself. In an effort to distract himself, Sheldon decides to throw himself into his work, but he ends up getting more than he bargained for when he discovers a new element. The gang is excited about Sheldon's discovery, but Sheldon is conflicted. He feels like he's lost something by not being able to have children, and he's not sure how to move forward. Meanwhile, Penny and Leonard are trying to navigate their relationship and figure out where they stand. Things have been a bit rocky between them lately, and they're both feeling uncertain about their future together. Despite their doubts, they decide to take a leap of faith and commit to each other once again. In the end, everyone learns something new about themselves and each other, and they all come out stronger for it.