History of Dysentery: Dysentery came from germs in your drinking water. Here people are washing clothes in the river (India) What is dysentery? Dysentery means having trouble with your insides [...]
History of cholera: Washing clothes in the river (India) Where did cholera get started? Cholera (KOLL-uh-rah) is a very serious sickness. It probably first got started in India. History of disease [...]
Thanks to Rocbike for the great picture! When the Earth first formed, about 4.5 billion years ago, it didn't rain here. Until about four billion years ago, Earth was too hot for raindrops to form, [...]
What is a wet nurse? An ancient Egyptian wet nurse nursing a baby (From the tomb of one of the daughters of Akhenaten) What is a wet nurse? A wet [...]
History of cheese: There are lots of different kinds of cheese. How to preserve milk? If you don't have a refrigerator, there's no way to keep milk from going bad [...]
A prokaryote (seen through a microscope) What does "prokaryote" mean? The simplest living cells are called prokaryotes, which is Greek for "before the nucleus" - these are cells that were [...]
E. coli bacterium under a microscope Where do E. coli bacteria live? E. coli are a very common kind of prokaryote cell that lives mainly inside mammals and birds, including [...]
