Nearly all known elements come from stars and related celestial events. During a star's lifetime, though, it can only fuse up to iron, so where do elements heavier than iron come from? Many come from neutron capture processes, which can occur in a variety of environments and events. These processes can be studied using current stars, which act as fossils of these past events. Using spectroscopy, we can determine a star's composition, which can indicate which events formed them and which internal processes might have occurred. Carbon-enhanced metal-poor (CEMP) stars are particularly excellent probes due to their old age and unique composition. It is thought that CEMP stars are second-generation stars, so in this way, they can also be used to study the early universe.