At some time around 200 A.D., the Stoic philosopher and teacher Cleomedes delivered a set of lectures on elementary astronomy as part of a complete introduction

Pytheas of Massalia (Marseille), mariner, explorer, geographer and astronomer, made a pioneering voyage into the then unknown Atlantic around 325 BC, reaching B

On Solid Ground illustrates what geologists know about the earth by telling the stories of the people who made major geological discoveries. It also chronicles

The most comprehensive collection of passages from later Stoic thinkers, providing fresh translations and up-to-date commentary.

This ebook is a selective guide designed to help scholars and students of the ancient world find reliable sources of information by directing them to the best a