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The ozone layer is a layer made up of a high concentration of ozone (O3) located in the stratosphere, which is the second major layer of Earth’s atmosphere. The ozone layer is known to absorb 97-99% of the high frequency ultraviolet (UV) light from the sun. This means that this layer is extremely important because it protects life on Earth from the harmful UV radiation. The ozone layer was discovered in 1913 by Charles Fabry and Henri Buisson and was studied further by G. M. B. Dobson who created a network of monitoring stations. The discovery of a large ozone hole in the Antarctic was announced in 1985 by scientists Joe Farman, Brian Gardiner and Jon Shanklin. Although ozone holes had been hypothesized much earlier, it came as a surprise because it was much larger than had been predicted. If you want to know what causes holes in the ozone layer, keep reading to find out.
The Cuban missile crisis was one of the most tense confrontations between the United States and the Soviet Union during the Cold War. It was an event that came very close to causing a nuclear war between the two countries. The confrontation ended on October 28, 1962 when the two sides reached an agreement.
Many people have become interested in finding out more about Tsunamis due to the recent and devastating tsunami in Japan. This particular Tsunami was caused by a violent earthquake that occurred below the surface of the ocean. However, not all tsunamis are caused by earthquakes. A tsunami is a series of waves that are made in an ocean or other body of water such as an inland sea or lake. Tsunamis are huge and can travel large distances very quickly. As they approach a coastline they slow down and gain height. Tsunamis can appear as a rapidly rising or falling tide or a series of large waves up to 30 meters in height.
The American Civil War (sometimes called the War Between the States) was a war fought between April 12, 1861 and April 9, 1865. But what caused the Civil War? This post will answer that question!