Tasty experiment. Taste tests are conducted under orange lighting at the Wine Science Institute in Villenave-d’Ornon near Bordeaux in southwestern France. The lighting disguises each wine’s colour, so that tasters can be more objective. Here, an employee samples wine from the Bordeaux-producing Château La Tour Carnet estate, which has launched a study into the effects of climate change and planted an experimental collection of 96 grape varieties alongside the conventional Merlot, Cabernet Sauvignon and Cabernet Franc.

Credit: Christophe Archambault/AFP via Getty