The quick ratio is also commonly referred to as the “acid test” ratio. This moniker refers to a quick and simple test gold miners used to use to determine whether samples of metal were true ...

Scientists at Yale and in Singapore have devised what may be the ultimate acid test—a comprehensive model for estimating the origins of Earth's habitability, based in part on ocean acidity.

Scientists at Yale and in Singapore have devised what may be the ultimate acid test — a comprehensive model for estimating the origins of Earth’s habitability, based in part on ocean acidity. The new ...