Professor Xargle explains to his class of extraterrestrials how humans behave in different kinds of weather.

"Good morning, class. Today we are going to learn about Earth Hounds. Earth Hounds have fangs at the front and a waggler at the back. To find out which is which

"Good morning, class. Today we are going to learn about Earthlets." In this way Dr Xargle, our friendly alien teacher, begins to teach his class about humans an