The sun's ultraviolet (UV) radiation is both the major cause of skin cancer and the best source of vitamin D. In Australia, we need to balance the risk of skin cancer from too much sun exposure with maintaining adequate vitamin D levels. Sensible sun protection does not put people at risk of vitamin D deficiency.
1 In 1819, Maine applied for statehood. Then a compromise developed: Maine could join as a free state to balance out Missouri joining as a slave state.  By 1820, the compromise had been realized. First, Missouri and Maine would be admitted to the Union, one as slave and one as free. In addition, the remaining territories would be divided into free and slave at the 36Â°30' parallel. This compromise became viewed as sacred by both sides.
Missouri Compromise. An Act to Authorize the People of the Missouri Territory to Form a Constitution and State Government, and for the Admission of Such State into the Union on an Equal Footing with the Original States, and to Prohibit Slavery in Certain Territories.