Read it up with Swathy

The Whale vomit !!!! . Why it is too expensive ? I'll tell you.  Whale vomit  is  also called as " ambergris " " treasure of the sea " and " floating gold   ". Ambergris is a waxy and solid substance formed due to the secretion of bile duct in the intestine of sperm whale . It floats in water. When exposed to the sunlight, air and sea water it hardens, fades to a light grey and yellow in colour. Eventually develops fragrance. And now it has been highly valued by perfume makers as a fixative . These whales are not normally harmed during the collection of ambergris, The sale of this product is also illegal because it is produced from an endangered species .

Liquid nitrogen is a form of element nitrogen that's cold enough to exist in a liquid state and can be used to many cooling and  cryogenic purposes. Because of the  severe problems on contact with living tissue, you must wear proper safety gear when handling liquid nitrogen to prevent contact or inhalation of the extremely cold vapour. Cover and insulate skin to avoid exposure.  It boils so rapidly, so that the phase transition from liquid to gas can generate a lot of pressure very quickly. Do not enclose liquid nitrogen in a sealed container, as this may result in it bursting or an explosion.  Adding large quantities of nitrogen to the air reduces the relative amount of oxygen, which may result in an asphyxiation risk. Cold nitrogen gas is heavier than air, so the risk is greatest near the ground. Use liquid nitrogen in a well-ventilated area.  Liquid nitrogen containers may accumulate oxygen that is condensed from the air. As the nitrogen evaporates, there's...