The Encyclopædia Britannica (Latin for "British Encyclopaedia"), published by Encyclopædia Britannica, Inc., is a general knowledge English-language encyclopaedia. It is written and continuously updated by about 100 full-time editors and more than 4,400 contributors. It is regarded as one of the most scholarly of English language encyclopaedias.

The Britannica is the oldest English-language encyclopaedia still being produced. It was first published between 1768 and 1771 in Edinburgh, Scotland as three volumes. The encyclopaedia grew in size; the second edition was 10 volumes, and by its fourth edition (1801–1809) it had expanded to 20 volumes. Its rising stature helped recruit eminent contributors, and the 9th edition (1875–1889) and the 11th edition (1911) are landmark encyclopaedias for scholarship and literary style. Beginning with the 11th edition, the Britannica shortened and simplified articles to broaden its appeal in the North American market. In 1933, the Britannica became the first encyclopaedia to adopt "continuous revision", in which the encyclopaedia is continually reprinted and every article updated on a schedule. In March 2012, Encyclopædia Britannica, Inc. announced it would no longer continue to publish its printed editions, instead focusing on its online version, Encyclopædia Britannica Online. Its final print edition was in 2010, a 32-volume set.

"Hansel and Gretel" ( /ˈhænsəl/ or /ˈhɑːnsəl/, and /ˈɡrɛtəl/; German: Hänsel und Gretel, diminutives of Johannes and Margaret) is a well-known fairy tale of German origin, recorded by the Brothers Grimm and published in 1812. Hansel and Gretel are a young brother and sister threatened by a cannibalistic hag living deep in the forest in a house constructed of cake and confectionery. The two children save their lives by outwitting her. The tale has been adapted to various media, most notably the opera Hänsel und Gretel (1893) by Engelbert Humperdinck and a stop-motion animated feature film made in the 1950s based on the opera. Under the Aarne–Thompson classification system, "Hansel and Gretel" is classified under Class 327.

The following summary is based on an 1853 anonymous translation by Iona and Peter Opie in 1972.

Hansel and Gretel are the young children of a poor woodcutter. When a great famine settles over the land, the woodcutter's second, abusive wife decides to take the children into the woods and leave them there to fend for themselves, so that she and her husband do not starve to death. The woodcutter opposes the plan but finally, and reluctantly, submits to his wife's scheme. They are unaware that in the children's bedroom, Hansel and Gretel have overheard them. After the parents have gone to bed, Hansel sneaks out of the house and gathers as many white pebbles as he can, then returns to his room, reassuring Gretel that God will not forsake them.