Gut bacteria not only help digest food, they also signal to our brain that we've eaten enough.
Over the course of human civilization, men have evolved more feminine traits.
Sugar beets are susceptible to wormy parasites that decrease crop yields.
For many women, growing older means growing a few whiskers.
Magpie personality traits differ according to their parents' hormone levels.
Is promiscuous behavior in male juncos due to testosterone levels?
Post-partum depression does not adequately account for the range of anxieties that come with early parenthood.
Does the amount of sleep I get affect how likely I am to catch a cold?
You've just snacked on rice cakes. Why are you still hungry?
Fear smells like sugar. At least that's the case for zebra fish.