You might have noticed that the seasons don’t quite behave like they used to. In some places, fall and spring seem to fly by, while winter and summer are much longer and feel more intense. This shift is known as season creep, where the timing of the seasons starts to shift.

This phenomenon is mostly due to climate change creating temperature imbalances and throwing weather patterns off kilter year-round. And it can cause problems for plants and animals as their natural cycles fall out of sync. But what does it mean for human behavior?

Seasonal Affective Disorder, often called seasonal depression, tends to hit during the cold, dark winter months. But as the seasons start changing more quickly and unpredictably, the shift could have a wide range of effects on us that we’re only just beginning to understand.

SciFri guest host Rachel Feltman is joined by Dr. Michael Varnum, social psychology area head and associate professor at Arizona State University, to discuss these questions.

Transcripts for each segment will be available after the show airs on sciencefriday.com. 

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