Human health depends on the health of the planet. Earth’s natural systems—the air, the water, the biodiversity, the climate—are our life support systems.

Are we alone in the universe? How did life arise on our planet? How do we search for life beyond Earth? These profound questions excite and intrigue broad cross

"Planetary created by Warren Ellis and John Cassaday. Elijah Snow created by John Cassaday and Warren Ellis"

This book introduces the reader to all the basic physical building blocks of climate needed to understand the present and past climate of Earth, the climates of

Comprehensive reference text on planetary astronomy written for the general reader.