In response to many people's leeriness of strangers, sharing economy companies often promote their background screening mechanisms.

Patients with severe prosopagnosia rely on voice recognition to identify people.

[Adolf] Hitler knows that he will have to break us in this island or lose the war. If we can stand up to him all Europe may be free, and the life of the world may move forward into broad, sunlit uplands; but if we fail then the whole world, including the United States, and all that we have known and cared for, will sink into the abyss of a new dark age made more sinister, and perhaps more prolonged, by the lights of a perverted science. Let us therefore brace ourselves to our duty and so bear ourselves that if the British Commonwealth and Empire lasts for a thousand years men will still say, This was their finest hour.

A borable and nailable concrete is obtained by first mixing 1 part of lime and 16-18 parts sand to form a lime mortar, and this is ground before it has completely set and then mixed with one part of cement.