Damien Hirst was a shark in formaldehyde in a vitrine, and sold for £50,000. The shark had been caught by a commissioned fisherman in Australia and had cost £6,000. The exhibition also included "In a Thousand Years". As a result of the show, Hirst was nominated for that year's Turner Prize, but it was awarded to Grenville Davey. Hirst's first major international presentation was in the Venice Biennale in 1993 with the work, "Mother and Child Divided", a cow and a calf cut into sections and exhibited in a series of separate vitrines. He curated the show "Some Went Mad, Some Ran
Formaldehyde human health. In 2011, the US National Toxicology Program described formaldehyde as "known to be a human carcinogen". Formaldehyde is more complicated than many simple carbon compounds in that it adopts several different forms. As a gas, formaldehyde is colorless and has a characteristic pungent, irritating odor. Upon condensation, the gas converts to various other forms of formaldehyde (with different chemical formulas) that are of more practical value. One important derivative is the cyclic trimer metaformaldehyde or 1,3,5-trioxane with the formula (CHO). There is also a linear polymer called paraformaldehyde. These compounds have similar chemical properties and are often used