Ancient poo from bats and birds can tell you what type of vegetation they were feeding on at that time.
Constipation can occur when there's a delay in digested food passing through your body and being expelled. It can also happen when your poo is too hard, often because it doesn't contain enough water.
Around 75% of our faeces is made up of water. The other 25% is the good stuff, including bacteria, viruses and undigested food.
All experts agreed there's nothing to worry about if you don't go every day.
Sit v squat – the big public toilet stand-off.
An expert explains how often you should poo and what it should look like.
New research explains that dogs may have evolved to eat faeces as a way to prevent the spread of disease.
New parenthood got our fluid dynamics experts thinking about what ends up in the diaper. They headed to the zoo and the lab to come up with a cohesive physics story for how defecation works.
On sale in New York for US$2,000. Don't all rush at once.
No wonder scientists love it.