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Cinnabar (mercury sulphide - HgS) is the single most toxic mineral to handle on earth. It is the worldâs main source of mercury and has been mined since Neolithic times. However, when oxidized, this element will produce methyl mercury and dimethyl mercury, two toxic compounds that cause irreparable harm to the nervous systems of children. It is deadly in small concentrations and can be absorbed through the respiratory tract, intestines, or skin.
The inland taipan is considered the most venomous snake in the world; based on the median lethal dose value in mice, its venom, drop for drop, is by far the most toxic of any snake â much more so than even sea snakes â and it has the most toxic venom of any reptile when tested on human heart cell culture.xyuranus microlepidotus has been the fierce snake's binomial name since the early 1980s. The generic name, Oxyuranus, means oxus (Greek) sharp pointed, oura (Greek) tail; -anus (Latin) belonging to, and refers to the inland taipan's long pointed tail.