The Shroud of Turin
A linen cloth about 14 feet 5 inches long (4.4 meters) carries the faint front and back image of a man who appears to bear the wounds of crucifixion. When Secondo Pia photographed it in 1898, he found the image read more clearly as a photographic negative, a discovery that has fueled debate ever since.
The cloth's documented history begins in the 1350s at Lirey, France, in a church founded by the knight Geoffroi de Charny. Around 1389 the local bishop, Pierre d'Arcis, wrote that it was a painting and that the artist had confessed. The House of Savoy acquired it in 1453, it survived a fire at Chambery in 1532, and it has been in Turin since 1578. The Holy See has owned it since 1983.
In April 1988 a strip was cut from one corner and divided among labs in Arizona, Oxford and Zurich. Their results, published in Nature in February 1989, put the linen between 1260 and 1390 with 95 percent confidence. Critics have since argued that the corner held a medieval repair, or that the raw data are statistically uneven. Textile conservator Mechthild Flury-Lemberg found no sign of invisible reweaving, and later checks of leftover sample found little contamination. Recent popes have avoided ruling on authenticity and treat the cloth as an object of devotion.
Verdict: UnprovenThe only radiocarbon test dated the linen to 1260 to 1390; critics dispute the sample, but no test has supported a first-century date.