Ice Ages Great and Small --
Changing Stars, Changing Climates --
Hidden Connections and Solar Science --
Solar Storms and Existential Risk --
Conclusion: Harnessing Our Star --
Measuring the Universe --
Venus as a Changing Earth --
Remaking Venus and Earth --
Conclusion: Earth's Once and Future Twin? --
The Promise and Peril of Lunar Life --
Lunar Changes, Human Ambition --
Conclusion: Navigating the Lunar Apocalypse --
Aliens on a Future Earth --
Reshaping Planetary Climates --
Conclusion: A Planet for Dreamers --
Part V. Comets and Asteroids --
Warnings in the Heavens --
Encountering Near Earth Objects --
Giggles and Close Calls --
Avoiding Jupiter's Fate --
Conclusion: Saving Earth, Fueling the Future? --
Conclusion: A Shore on the Cosmic Ocean.
