Hormone Roundup
Testosterone levels in married couples, estrogen improves memory and learning, and male sweat calms …
Rolling Eyes
Why do our eyes roll back when we sleep? (They don't, really; they move all around.)
Tilted Earth
Why is the Earth tilted? (Got knocked around as it was forming billions of years ago)
Brain Fitness
Physically fit senior citizens retain more brain volume as they age.
Sleep Roundup
Sleep deprivation hurts cognitive ability, even if you don't feel sleepy.
Blood Types
Why do people have different blood types? (Different molecules on the surface of red cells)
Big Heads
Does a bigger head mean a bigger brain? (Generally, but it doesn't mean you're smarter.)
Ptarmigan Teaching
Mother ptarmigans teach their chicks to what foods to eat by calling to them.
Buggy Plants Roundup
Atlantic salmon can escape from Pacific fish farms, vitamin D prevents bone fractures, and organic …
Montezuma’s Revenge
The toxin from E. coli that causes diarrhea may help prevent colon cancer.