1491: new revelations of the Americas before Columbus

Holmberg's mistake

A view from above

1: Numbers from nowhere?

Why Billington survived

In the land of four quarters

Frequently asked questions

2: Very old bones

Pleistocene wars

Cotton (or anchovies) and maize (tales of two civilizations, part I)

Writing, wheels, and bucket brigades (tales of two civilizations, part II)

3: Landscape with figures

Made in America

Amazonia

The artificial wilderness

The great law of peace.