Global warming refers to the rise in temperatures at Earth’s surface and lower atmosphere over
the last century. Most scientists believe that greenhouse gases produced by human activity are
contributing to global warming. The danger in this warming is that it could disrupt Earth’s climate
patterns, cause coastal flooding, and force major adjustments in the way people live. The more
we are able to learn about the causes and effects of global warming, the better prepared we may
be to deal with the possible consequences of a changing environment.