We hear it everyday on the radio and television, and read it in the newspapers. One of the most pressing problems facing us today is the warming of the planet due to an increase in man-made greenhouse gases. This warming will cause many alterations to our environment, due to various climate changes. This Guide will bring to your students an understanding of what is becoming apparent today, why this is so and what will happen in the future. Through activities, web searches and worksheets, they will learn how we monitor weather, why the global temperature is increasing and what the consequences will be.