What are Carbon Offsets?
STEM Explained
Can carbon offsets help you reduce your environmental footprint, practice sustainable living and fight climate change?
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.
What are the Pros and Cons of Ethanol Biofuel?
STEM Explained
Biofuels like ethanol might help fight climate change. But they can contribute to food insecurity and greenhouse gases in ways that might surprise you.
What is Fracking?
STEM Explained
The fracking process gets natural gases out of rocks. This process can have effects on freshwater, water quality and even earthquakes!
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?
Marine Microbiology: Meet the Microbes of the Sea!
STEM Explained
The ocean is full of very small but very useful creatures called microbes. Without them, none of the sea plants or animals you’ve seen would exist!
How can I write secret messages?
Hands-on Activities
Learn how you can write and reveal secret messages in this hands-on chemistry activity.
How does rain become acidic?
Hands-on Activities
Learn how to make a pH indicator and test water samples.
Guppies, Guppies Everywhere!
STEM Explained
How do different populations adapt to their environment? Let’s explore this concept through guppy speciation.
Eutrophication: Why you should care about pond scum
STEM Explained
When fertilizers from agriculture get into lakes and rivers, big problems can result for aquatic ecosystems, food chains & webs!
A Taste of Heavy Metal
STEM Explained
Heavy metal is a term for some toxic chemical elements. They can cause problems like bioaccumulation, but are useful in nuclear medicine and medical imaging.
Katharine Scotton
Career Profiles
Environmental Consultant