This is part one of a two-part series on erectile dysfunction. Over my 35 years of practice, I’ve become used to seeing older men with erectile dysfunction (ED) problems, but recently I’ve been ...

ED is real—but it's also one of the most over-applied terms in men's health. Knowing the difference between normal variability and dysfunction can bring relief.

Word problems try and tell students a story about the math problem in front of them. They are a useful way to connect abstract numbers to concrete situations, so students can learn early on to apply ...

If the mere existence of data were enough to solve pedagogical problems, the accumulation of it over the past several decades should have made teachers’ lives exponentially easier by now. But that’s ...