Mark Carlotto is an aerospace engineer with over thirty years of experience in satellite imaging, remote sensing, image processing, and pattern recognition. He received his Ph.D. in Electrical Engineering from Carnegie-Mellon University in 1981 and has published numerous technical articles and books such as The Martian Enigmas, The Cydonia Controversy and Before Atlantis. Dr. Carlotto contributed extensively to the investigation of the Face and other structures in the Cydonia region of Mars, analyzed anomalous objects in STS-48 and STS-80 space shuttle videos, and participated in a study of unusual surface features on the far side of the Moon. In his latest book, Before Atlantis, Mark draws from his unique background and experience to propose new answers to basic questions concerning human origins, ancient technology, and archaeological enigmas. Pyramids of the world. This conversation is a part of series Kaleidoscope of Facts which brings together scientists, journalists, and explorers in an attempt to find the truth about human origin and ancient knowledge.