There's only so far people can go underground. Eventually, heat and pressure become too much, and scientists have to rely on technology to record information for them. Readers learn all about the latest science being done underground, including research on fossils and fossil fuels, volcanoes, soil, and more. From geology to seismology, several different kinds of science are discussed, emphasizing many exciting STEM careers readers might strive for. Full-color photographs show scientists hard at work and explore some of the coolest new technology for mining, fossil digs, and cave research.