Precise knowledge of the interaction between the atomic nucleus and the surrounding electrons offers a complementary insight into the atomic nucleus and the fundamental particles and forces of nature. Exotic molecules - those containing nuclei with extreme proton-to-neutron ratios - can be tailored to investigate particular details of electron-nucleon interactions and enhance their symmetry-violating properties. Thereby offering high sensitivity to access to unexplored nuclear phenomena, to study the violation of fundamental symmetries, and to search for new physics. In this talk, I will present recent results from laser spectroscopy experiments of these exotic species. The relevance of these results to some of the pressing questions of nuclear science will be discussed.