Other big brands were accused of using poor dyes or having bad colour quality.

ECONOMIST: Foreign brands encounter a new form of protectionism

By looking at the types of lichen that are in your local area, you can find out whether the air quality is good or bad.

BBC: York & North Yorkshire - Can you help identify lichen?

Diners haven't been exposed to quality fat in recent years because pigs raised on a bad diet or living in high-stress environments will have yellowish fat that smells putrid.

WSJ: High on the Hog

Conversely, to the extent that investors do not presently own shares whose price might be altered by good or bad information, the proper pricing of those shares thanks to the inside investor acting on quality information enables buyers to make better informed decisions about whether or not to buy.

FORBES: Political Economy

They may raise the quality of these presentations and documents by prohibiting bad practices such as pseudo-three-dimensional charts or multiple pie charts.

FORBES: Should I Shade Alternate Rows in My Tables?

Going forward, he said, Demand will continue to elevate the quality of its content while overhauling or eliminating the lowest-quality, user-generated content of the sort that has occasionally given the company a bad name.

FORBES: Demand Media to Google: Thank You Sir, May I Have Another?