While it might not be the most talked-about topic, understanding the colour, smell, and frequency of baby pee can give you ...

Certain foods and medicines can cause black stool. Sometimes, black stool may even signal bleeding in the digestive tract.

Working with penguin poop was another story ... Krill showed a similar reaction to the smell. In algae-only water, they quickly swam toward the food then lingered near the buffet.