Coming in late summer — human baby season

There is definitely a seasonality to human births, writes Beth Skwarecki at Double X Science. The complicated bit is that human baby season isn't necessarily the same (or as strongly expressed) from place to place and culture to culture. In the United States, significantly more babies are born in July, August, and September. Meanwhile, in Europe, babies seem to make their way into the world in spring. So there's clearly a cultural component to this — but culture doesn't explain it, entirely. Skwarecki's piece explores a messy place where culture, genetics, and circadian rhythms intersect. Read the rest

The science of flu season

Flu season is in winter. Okay, great. But why? (Consider this an open thread for all your favorite humidifier recommendations.) Read the rest
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How seasonal affective disorder works

Winter is coming. And Scientific American's Bora Zivkovik has a detailed explanation of the biological basics behind seasonal affective disorder. Read the rest