Linking Earth's Past
to the Habitability of Planets

Are we alone? This question has transcended the realm of philosophy and emerged as a scientific inquiry—one that we are now capable of addressing. With ongoing exploration of our solar system and the observation of exoplanets, the horizon of our knowledge continues to expand, enabling us to examine Earth as a life-bearing planet from multiple perspectives. Understanding the environments in which life can emerge and evolve is a profound academic challenge that spans numerous scientific disciplines. Achieving this understanding requires considerable effort, but we are now poised to take the first step.

This workshop brings together researchers from diverse backgrounds to collectively explore and reassess our current understanding of habitable environments—those capable of supporting life. Through interdisciplinary dialogue and collaboration, we aim to advance our comprehension of life-supporting conditions and, ultimately, deepen our understanding of Earth itself.

June 25 (Wed.)

• Opening Remark @ N204 (9:00 ~ 9:10)

• Session 1.1a @ N204: The Solar system 1; Chair: Taniguchi

 9:10 ~  9:50 D. Takasuka Global cloud-resolving climate simulation and its application beyond the modern Earth

 9:50 ~ 10:30 T. Higuchi A Review of Global Climate Model Studies: Modern Climate from Cretaceous Perspectives

10:30 ~ 10:40 Short break

• Session 1.1b @ N204: The Solar system 1; Chair: Obase

10:40 ~ 11:20 A. Kamada Simulating the day-night hydrological cycle on TRAPPIST-1e using a coupled global climate, river, and ice sheet model

11:20 ~ 12:00 S. Nozaki Ammonia Incorporation into Methane Clathrate Hydrates in Subsurface Fluid in Icy Worlds: Implications for Atmospheric Methane Replenishment on Titan

• Lunch Break (12:00 ~ 14:00)

• Session 1.2a @ N204: The Solar system 2; Chair: Higuchi 

14:00 ~ 14:40 T. Yoshida Co-evolution of Earth's proto-atmosphere and magma ocean

14:40 ~ 15:20 K. Taniguchi Climate on tidally-locked, ocean-covered planets and AOGCM

15:20 ~ 15:30 Short Break

• Session 1.2b @ N204: The Solar system 2; Chair: Nozaki

15:30 ~ 16:10 T. Kuroda DRAMATIC Planets: GCM modelings of Mars and Venus for various ages and beyond

16:10 ~ 16:50 N. Terada Co-evolution of early Mars' atmosphere and prebiotic chemistry

• Social Party

June 26 (Thu.)

• Session 2.1 @ N204: Habitable and Astrobiology; Chair: Kadoya

 9:00 ~  9:40 T. Kodama Habitable Worlds toward Life

 9:40 ~ 10:20 K. Fujishima Astrobiology and molecular origins of life

10:20 ~ 10:30 Short break

• Session 2.2 @ N204: Snowball Earth; Chair: Yoshida

10:30 ~ 11:10 S. Kadoya Impact of subglacial weathering on the carbon cycle under a global glaciation

11:10 ~ 11:50 T. Obase Climate and ocean circulation in the modern snowball Earth: lessons from MIROC4m

• Lunch Break (12:00 ~ 14:00)

• Session 2.3 @ N307: Discussion (14:00 ~ 15:20)

• Session 2.4 @ S407: Discussion (15:30 ~ 17:00)

June 27 (Fri.)

• Session 3.1a @ N404: Biology & Environment; Chair: Kodama

 9:00 ~  9:40 Y. Himeoka A theoretical approach to dissecting life from non-life

 9:40 ~ 10:20 H. Sugiyama Abiotic Molecular Transport Across Lipid Membranes: Implications for the Origin of Life

10:20 ~ 10:30 Short break

• Session 3.1b @ N404: Biology & Environment; Chair: Takasuka

10:30 ~ 11:10 J. Yamagishi Microeconomics of Metabolism: A Linear Response Theory

11:10 ~ 11:50 A. Nishihara Co-evolutionary history of life and the Earth

• Concluding Remark @ N404 (~ 12:00)

Takanori Kodama (ELSI, Science Tokyo)

Takeshi Kuroda (Tohoku Univ.)

Daisuke Takasuka (Tohoku Univ.)

Shintaro Kadoya (ELSI, Science Tokyo)