Humans and Freshwater Ecosystems
Backgrounders
Learn about how people impact the ecosystems of lakes and rivers.
Generating Electricity: Biomass
Backgrounders
Learn how biomass can be used to generate electricity.
Ian Cook
Journeyman Sheet Metal Worker
Generating Electricity: Fossil Fuels
Backgrounders
Learn how energy from fossil fuels can be used to generate electricity.
Light Pollution
STEM Explained
Light can be a type of pollution. Learn about the damage it causes to people and living things as well as how you can prevent it.
Sheila Sadler
Sheet Metal Journeyperson
Catalytic Converters
STEM Explained
Learn about how catalytic converters make vehicle emissions less harmful.
What is Acid Rain?
STEM Explained
Acid rain is any precipitation that has an unusually low pH. It can be rain, snow, fog, etc. But what is a low pH and why is this a problem?
Fueling Internal Combustion Engines
Backgrounders
Learn about the wide variety of fuels used in vehicles.
What are Greenhouse Gases?
Backgrounders
This backgrounder explains what greenhouse gases are and how they contribute to climate change.
What are the best materials to use for cleaning water?
Hands-on Activities
Water is a precious natural resource. What happens if it gets polluted? Learn how water can be cleaned with this hands-on activity?
What are the effects of acid rain on rocks?
Hands-on Activities
Learn about the chemical reaction that happens between acid rain and limestone.
Understanding the Nitrogen Cycle
STEM Explained
What is the nitrogen cycle? How do human activities such as using fertilizer affect the nitrogen cycle? How can this cause greenhouse gases?
Is There Too Much Carbon Dioxide in Your Classroom?
STEM Explained
Did you know that too much carbon dioxide in the classroom can affect your body, and even your grades?
The History and Uses of Hydrogen
STEM Explained
Hydrogen’s tendency towards combustion is what makes it both a dangerous chemical element and a useful energy source.