the Disappearing Ozone Layer

blocks the majority of the sun's UV radiation. Rumors of blind sheep the increased radiation was thought to cause cataractsand increased skin cancer stoked public fears. In 1985, the nations of the world recognized that CFCs were a threat to our ozone layer. Still, researchers like Johnson see the worlds mobilization around the ozone hole as a beacon of hope in a sometimes bleak climate for science. "We shouldn't relax." While CFCs have been regulated, greenhouse gases continue to increase, and these gases may have unrecognized effects on our ozone layer. In the 1830s, Christian Friedrich Schönbein coined the term ozone for the odor, riffing off the Greek word ozein, which means to smell. The chlorine reacts with the oxygen atoms in ozone and rips apart the ozone molecule. Ozone in the stratosphere is important because it absorbs some of the Suns dangerous ultraviolet radiation. The scientific revolution that spurred on discoveries like Lavoisiers also led to experiments with electricity, which produced to a stinky revelation: Passing electricity through oxygen produced a strange, slightly pungent smell. But 30 years after its discovery, the ozone hole just doesnt have the horror-story connotations it once did.

"They did not know the extent of it because they only had data from one spot said Pawan. Chlorofluorocarbons (CFCs chemicals found mainly in spray aerosols heavily used by industrialized nations for much of the past 50 years, are the primary culprits in ozone layer breakdown. The report, published jointly by unep and the UN World Meteorological Organization (WMO) is the first comprehensive update in four years on the Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol phasing out chemicals which accelerate both ozone layer damage. The satellite readings also showed ozone levels so low the team thought it might be instrumental error. Ozone is created when oxygen molecules (02) are split by the sun into a duo of free-ranging oxygen atoms.

'It (the Protocol) has protected the stratospheric ozone layer from much higher levels of depletion by phasing out production and consumption of ozone depleting substances said the report. In 1776, Antoine Lavoisier proved that oxygen was a chemical element, and it took its place as number eight on the periodic table. This regions low temperatures speed up the conversion of CFCs to chlorine. Since the hole opens and closes and is subject to annual variances, air flow patterns and other atmospheric dynamics, it can be hard to keep in the public consciousness. Eventually, ozone was discovered to be a gas made from three oxygen atoms. Biologists fear that reductions in phytoplankton populations will in turn lower the populations of other animals.



the Disappearing Ozone Layer

The ozone layer is a term used to describe the presence of ozone molecules in the stratosphere. The ozone layer is vital to life on the surface of the planet. It acts as a filter and prevents the harmful ultraviolet radiation (UV-B) from reaching the, earth. They discovered that ozone collects in a layer in the stratosphere, roughly 12 to 18 miles above the surface, and absorbs ultraviolet light.