Every region has a renewable resource that can be used to make hydrogen. But, what is hydrogen and why can it be used as an energy source? Find out with a presentation that answers these questions and then discusses where hydrogen is...

Touching upon energy sources and the causes of pollution, this PowerPoint could be expanded. For example, it describes the greehnouse effect and the problems associated with global warming, but does not indicate that the greenhouse...

The surge in human population in the last 2,000 years, due in large part to better health care, has brought a surge in the demand for resources and in pollution. The graphics, photographs, and real-life examples in a thought-provoking...

Focusing on what electricity is and where it comes from, the information here is accessible to young scientists.  The basics of how electricity is made and its uses as a power supply are given with clear illustrations. Some examples...

Eight slides of information related to shifts in the climate make up this presentation. The vocabulary and concepts displayed are geared toward high school meteorology learners. Content is not cohesive from slide to slide, but the...