Beluga caviar Service to ban in 2005 the importation of beluga caviar which originated in the Caspian Sea and Black Sea basin. In 2006, the Convention on International Trade in Endangered Species (CITES) suspended all trade made with the traditional caviar-producing regions of the Caspian and Black Seas (Beluga, Ossetra and Sevruga), (Azerbaijan, Bulgaria, China, Iran, Kazakhstan, Romania, Russia, Serbia and Montenegro, Turkmenistan, and Ukraine) due to the producing countries' failure to apply international regulations and recommendations. Caviar from Iran is exempted from the ban. Iran is considered by CITES to practice effective conservation and policing of its fisheries. In January 2007,
Hypothetical types of biochemistry Hypothetical types of biochemistry Hypothetical types of biochemistry are forms of biochemistry speculated to be scientifically viable but not proven to exist at this time. The kinds of living organisms currently known on Earth all use carbon compounds for basic structural and metabolic functions, water as a solvent, and DNA or RNA to define and control their form. If life exists on other planets or moons, it may be chemically similar; it is also possible that there are organisms with quite different chemistries—for instance, involving other classes of carbon compounds, compounds of another element, or another solvent in place of