The Human Effect

In the past two hundred years, the Earth’s population has exploded and humans have mastered increasingly complex machinery. As humans have learned to build factories and operate large vehicles on dry land and on the water, we have changed the landscape all around us. Human activities have polluted the oceans and the air and destroyed entire habitats through deforestation. In these modules, you will see the impact of human activities first-hand and learn what all of us can do to make positive change.