Birds migrate. Goats grow their gonads. Squirrels bury themselves. Migration. Reproduction. Hibernation. Seasonal rhythms. We know that every species from single-celled organisms to human beings express intricate daily rhythms — called circadian rhythms. But did you know many species exhibit annual patterns as well? They’re called circannual or seasonal rhythms and have their roots in evolutionary biology. Primarily governed by the length of sunlight …
Cigarettes, Trans Fats
and Light Bulbs
It wasn’t long ago that a surgeon might stroll into the operating room with a lit cigarette in tow, as some lauded nicotine’s beneficial effects on focus and attention, but the CDC now considers tobacco use the leading cause of preventable death worldwide. Trans fats used in fast foods were considered a healthy alternative to saturated fats, until further research linked them …