In everyday language, the term validity is typically used to describe something as being trustworthy or legit. It's meaning in psychology suggests something similar—it's all about whether we can trust ...

The integrated measurement of all components involved in these processes in single cells is not possible with current technologies, although in the past 30 years there has been a marked increase in ...

This is the second in a series of articles about impact measurement for social entrepreneurs. Social entrepreneurs who are serious about having impact or about attracting capital from sophisticated ...

Gravity, one of the constants of life, not to mention physics, is less than constant when it comes to being measured. Various experiments over the years have come up with perplexingly different values ...