“For centuries people have been amazed and puzzled by crop circles. All over the world, circles and other patterns have suddenly appeared in fields of crops. Some crop circles are simple, circular shapes. Others are incredibly elaborate. These complex crop formations can take the form of patterns, diagrams, or pictures drawn on the ground. But whatever the shape they take, nobody has completely explained how and why they are formed” (Bingham, 2013).

Use these terms to search the catalogue , databases and if necessary, the Internet.

Crop Circles

The following Dewey numbers will also help:

• 001.9
• 001.94

You may find more useful keywords as you explore your topic. Watch out for them.