The nocturnal is a navigational instrument that was first invented in the 16th Century. By focusing on the stars it can estimate the time to within 10-15 minutes. The outer edge of the instrument ...

For millennia, Pacific voyagers have relied on techniques such as these to reach thousands of islands, strewn throughout our planet’s largest ocean. They did so without Western instruments. Instead, ...

We'd been at sea all afternoon and most of ... argued that accurate navigation over thousands of miles without instruments is impossible. Others responded with ethnographic studies showing that ...