Digestive System
Inside the Hidden Kingdom of Viruses in Your Gut
Human innards are teeming with viruses that infect bacteria. Here's what scientists are learning about them
How Do We Know When to Pee?
The basic urge is surprisingly complex and can go awry as we age
How Saliva Changes the Flavor of Food
The liquid impacts how we perceive taste and can influence what we choose to eat
Sharks' Intestines Spiral Like a Valve Invented by Nikola Tesla
Tesla's ingenious valve promoted a one-way flow of fluid without the need for moving parts, but, it turns out, evolution got there first
Wombats Poop Cubes, and Scientists Finally Got to the Bottom of It
The marsupial’s unique digestive tract forms square dung
A Swan Swallowed This Fish Egg, Pooped It Out—and Then 49 Days Later, It Hatched
The new study is one of the first to demonstrate fish egg dispersal via avian fecal matter
Why Wombats Make Cube-Shaped Poos
New research shows differences in elasticity in the intestines shapes the poo as it moves through
A Surprising Way Dogs Are Similar to Humans
We share more than snuggles and and a love of walks; canines and humans have similar gut microbiota
How Cheese, Wheat and Alcohol Shaped Human Evolution
Over time, diet causes dramatic changes to our anatomy, immune systems and maybe skin color
What Lemur Guts Can Tell Us About Human Bowel Disease
Similarities between us and the cuddly primates could help us understand the origins of human illnesses—and treat them
The Taste Map of the Tongue You Learned in School Is All Wrong
Modern biology shows that taste receptors aren't nearly as simple as that cordoned-off model would lead you to believe
A Grand Unified Theory of Pooping
Why you and an elephant spend the same amount of time on the john
Why Coffee Makes Some People Poop
It's not the caffeine
Why Would Cooling Rice Make it Less Caloric?
Scientists suggest a new way to prepare rice that they say could help slow the worldwide obesity epidemic
7 Medical Advances to Watch in 2014
These breakthroughs range from making body parts on a 3D printer to getting the body to fight cancer on its own
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