Carrots can help you see in the dark............

The carrot gets its characteristic and bright orange colour from β-carotene, which on consumption by humans is metabolised into vitamin A. Lack of Vitamin A can cause poor vision, including night vision, and vision can be restored by adding Vitamin A back into the diet. The urban legend that says eating large amounts of carrots will allow one to see in the dark developed from stories of British gunners in World War II who were able to shoot down German planes in the darkness of night. The legend arose during the Battle of Britain when the RAF circulated a story about their pilot's carrot consumption as an attempt to cover up the discovery and effective use of radar technologies in engaging enemy planes. It reinforced existing German folklore and helped to encourage Britons - looking to improve their night vision during the blackouts - to grow and eat the vegetable.

Carrot trivia courtesy of Wikipedia. What did we do before the Internet?