ywhere and
people everywhere. Humans are warming the earth's atmosphere by burning
fuels, cutting down forests, and by taking part in other activities that release
certain heat- trapping gasses into the air. Humans all over the world need to
get together and solve these problems. In the southern hemisphere, the
warming is the greatest over Australia, southern south Africa, the southern tip
of south America, and the area of Antarctica near Australia. In the northern
hemisphere, warming is strongest in Alaska, northwest and eastern Canada,
most of the Soviet Union, and parts of Southern Asia, North Africa and south
west Europe. Climate has cooled in Great Britain and northern and eastern
Europe. In the USA scientists found no overall warming trend in weather
records kept since the nineteenth century, however keepin mind the United
States covers only 1.5 percent of the earth's surface. As warming continues,
every place on the earth will be effected. In the frozen heart of the last ice
age, 18,000 years ago, the temperature was only about nine degrees
Fahrenheit colder then today. So a change of a few degrees can have a
dramatic effects. Todays most sophisticated climatic models estimate the
global temperature will rise between 3 and 9 degrees Fahrenheit in the next
century. This could occur as early as the year 2050. Here are the large scale
changes the rise might bring: As water warms it expands, taking up more
space. So warmer ocean water, with added melt-water from glaciers, will
rise by twenty inches to five feet in the nex...