Spring is finally here, and for most of us that’s probably a breath of fresh air.  There’s not only a change in the

temperature but a change in people’s moods.  Most of us have heard about the winter blues, but do you know

where the saying comes from?  Every year, millions of Americans suffer from mild to severe cases of the winter

blues, a condition known as seasonal affective disorder, or what’s commonly referred to as SAD.  On this week's

Fordham Conversations, WFUV's Katie Fisher is joined by Fordham University Professor of Chemistry Joan

Roberts who's an expert on SAD.  Dr. Robert's talks about the cause of seasonal depression and the powerful

impact light has on health.