But now we've winnowed out the wheat from the chaff; and what we have in store ... given that these are all third-round matches, with the seeds having benefited from byes in round one: ...

A privacy technique that is simpler than encrypting a message with a key. Chaff is the unusable part of a plant, and winnow means to separate the chaff so it can be discarded. Thus, chaff is sent ...

But some materials don't have to end up in landfills, like coffee chaff. McDonald's partnered with Ford's research team, which was already using agave, wheat, tomatoes, and even denim byproducts ...