Under a Green Sky: Global Warming, the Mass Extinctions of the Past, and What They Can Tell Us about Our Future - Paperback

The Life and Death of Planet Earth: How the New Science of Astrobiology Charts the Ultimate Fate of Our World - Paperback

Ausgerottet Oder Ausgestorben?: Warum Die Mammuts Die Eiszeit Nicht Überleben Konnten - Paperback

Rare Earth: Why Complex Life Is Uncommon in the Universe - Paperback

The Call of Distant Mammoths: Why the Ice Age Mammals Disappeared - Hardcover