Ozone layer breakdown of ozone in the stratosphere results in reduced absorption of ultraviolet radiation. Consequently, unabsorbed and dangerous ultraviolet radiation is able to reach the Earth’s surface at a higher intensity. Ozone levels have dropped by a worldwide average of about 4 percent since the late 1970s. For approximately 5 percent of the Earth's surface, around the north and south poles, much larger seasonal declines have been seen, and are described as "ozone holes". The discovery of the annual depletion of ozone above the Antarctic was first announced by Joe Farman, Brian Gardiner and Jonathan Shanklin, in a paper which appeared
The Layer Monument The Layer Monument The Layer monument is an early 17th-century polychrome marble mural monument (320 × 350 cm) erected to the memory of the lawyer Christopher Layer (1531–1600), and located in the Church of Saint John the Baptist, Maddermarket, Norwich. Its inscription is in Latin, and reads in translation: The monument is notable on two accounts, firstly, its four figurines housed in its two columns, "Pax" and "Gloria", "Vanitas" and "Labor", are relatively rare examples of Northern Mannerist sculpture extant in Britain; secondly, these four figurines exemplify how, during the era of Elizabeth I, Christian iconography occasionally integrated symbolism which