This is the title of a book by Professor Petr Martinec of the Institute of Geonics of the ASCR. Carbon dioxide stored within rock massifs has become a topic of worldwide importance among contemporary geologists, geochemists, geotechnologists and also environment experts. Traditional geological studies examining the origins and incidence of carbon dioxide in rock environments recently have been expanded to include investigations into the conditions under which carbon dioxide can be captured and stored in underground locations. Geotechnology is concerned with the underground occurrence of carbon dioxide because of its impact on mining activities. Frequently they face formidable problems whenever gases are released during either driving or extraction operations. Currently, intense planning is focused on the implementation of the technology of carbon dioxide storage in suitable geological host formations within the framework of the CCS (Carbon Capture and Storage) technologies.