With carbon dioxide levels rising to the highest levels that have been seen in recorded history, it is likely that this trend will only increase. The cause of these deaths by emissions are cancer and heart disease, two of the most deadly killers in this modern age.wo of the main nutrients affected by higher levels of carbon dioxide are zinc and iron, nutrients for which about 2 billion people on Earth are already deficient (that comes out to almost 30% of the global population).
The discovery of mercury as an element was in the 18th century. Incidentally, at about the same time, also 3000 years ago, the Sumerians discovered the planet Mercury. Like the Babylonians who discovered mercury and put in many records but not as an element, the Sumerians recorded the planet mercury quite a lot.
A heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these conditions is bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.Contents. On the periodic table of elements, the chemical symbol for mercury is Hg, from the Latin word-Hydrargyrum-meaning liquid silver. 2  For quite some time, we have known that high concentrations of mercury can be toxic to humans; the first account of mercury poisoning was recorded as early as 50 B.C.