Winnowing gold to save some bronze

We are quite sure that everyone has heard the ol’ wheat-n-chaff cliché. That’s the one about distinguishing the wanted from the unwanted, the valuable from the relatively valueless.

That phrase comes from the simple agricultural practice of exposing wheat to the wind so that the chaff blew away and the grains remained. It was a process called ‘winnowing’ and it has been around for thousands of years.

When the wind wasn’t up to the task,... Read more »