The chestnut trees of Europe tell a hidden story charting the fortunes of ancient Rome and the legacy it left in the continent's forests. The ancient Romans left an indelible imprint on the world they enveloped into their empire. The straight, long-distance roads they built can still be followed beneath the asphalt of some modern highways. They spread aqueducts, sewers, public baths and the Latin language across much of Europe, North Africa and the Middle East. But what's perhaps less well known is the surprising way they transformed Europe's forests. ... Romans had something of a penchant for sweet chestnut...