For example, iron-gall ink, commonly used on ancient documents, is transparent to infra-red light and most visible in the ultraviolet region of the spectrum.

ECONOMIST: Monitor

The red wines from the Beaujolais region are made from the Gamay grape, particularly well-suited to the granite-based soils of the area.

WSJ: Jay McInerney on Cru Beaujolais | On Wine

We circle past a red-painted mosque at the village of Aday and arrive at one of the few Berber houses in the region that is still occupied.

BBC: In search of a lost Moroccan oasis