Nicolas Coltice, a professor of geodynamics at the Géoazur laboratory of the University of the Côte d'Azur, has written a book titled Anatomie d'une planète that explores the intricate relationships between Earth's evolution and the living beings it hosts. In the book, Coltice discusses how the air we breathe is a legacy of cyanobacteria that, 2.4 billion years ago, loaded the atmosphere with oxygen, a byproduct of their metabolism. This event, known as the Great Oxidation Event, fundamentally changed Earth's environment and made complex life possible. He also explains that the water we drink is a legacy of the big bang and several generations of massive stars. Water molecules, composed of hydrogen and oxygen, were created in the early universe and later refined through the life cycles of stars, which exploded as supernovae, scattering these elements across space. Over time, these elements combined to form the oceans on Earth, essential for the development of life. Additionally, Coltice notes that our biological clock beats to the rhythm of the Moon's orbit around us, and our cortex may have developed at the time when, during the Eocene, tectonic plates changed their trajectory. These geological shifts may have influenced climate patterns and ecosystems, indirectly shaping the evolution of life on Earth, including humans. Coltice's work combines geophysics with anatomy, evolution, and microbiology, reflecting his desire to tell the intimate relationship between humans and their planet through a cross-disciplinary approach. By weaving together various scientific fields, Anatomie d'une planète offers a unique perspective on how Earth's physical processes and biological developments are deeply interconnected.