1. Introduction

    1. Vision of the evolution of life on pre-Cambrian Earth

    2. A model for the phase transition increasing the radius of Earth by factor 2

  2. A possible view of the expansion of Earth?

    1. Did the inner core participate the expansion?

    2. How the outer core was formed?

    3. The energetics of the transition

  3. TGD view of the pre-Cambrian era

    1. A rough overall view of pre-Cambrian era

    2. Comparison with the recent Mars

    3. Some questions related to the pre-Cambrian period

    4. A possible mechanism of radiative   energy transfer from the Earth's core to underground oceans near the surface of Earth

    5. Did Earth have a ring before the Cambrian Expolosion and did the rapidly expanding Earth catch the ring?

    6. Could the proposed Expansion of Earth during Cambrian Explosion havelead to the formation of Moon?

  4. Some mysteries of the biological evolution from the TGD point of view

    1. Three mysteries

    2. LUCA from the TGD perspective

    3. The perplexing findings about the asteroid Ryugu from the TGD perspective