![A melting world-shaped glacier](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/melting_world-shaped_glacier.jpg?itok=-lrMUAJG)
What is Ocean Warming and Why Does It Matter?
STEM Explained
Oceans absorb the greatest amount of solar radiation on Earth. Ocean warming can lead to glaciers melting and ocean acidification.
![What is the Greenhouse Effect?](/sites/default/files/2019-08/what-is-the-greenhouse-effect.jpg)
What is the Greenhouse Effect?
Hands-on Activities
Explore the greenhouse effect and learn about the impacts it can have on the environment.
![Fluffy Snow On Deciduous Tree Fluffy snow on deciduous tree](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1448561779273-0ab17ed52a14.jpg?itok=rv3HZf3W)
Weather: Snow
Picture Collections
10 images of some snowflake crystals and some winter scenes with snow
![Stratus Clouds Stratus Clouds](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1440429801299-1edd4345fe51.jpg?itok=rJWRpe9j)
Weather: Stratus Clouds
Picture Collections
5 images of stratus clouds that cover a wide horizontal layer in the sky at low level and are often associated with rain or drizzle
![Solar panel project in Dakar, Senegal](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Solar_project_Dakar%2CSenegal.jpg?itok=q64WAuqV)
What are Carbon Offsets?
STEM Explained
Can carbon offsets help you reduce your environmental footprint, practice sustainable living and fight climate change?
![Hamilton, Ontario industrial area with Toronto skyline in the background](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/the-hamilton-industrial-area-with-toronto-skyline.jpg?itok=shKtb5Tb)
What are Greenhouse Gases?
Backgrounders
This backgrounder explains what greenhouse gases are and how they contribute to climate change.
![Biofuel concept](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/biofuel-concept.jpg?itok=mGz1FUEJ)
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.
![Screen captures from embedded Kurzgesagt – In a Nutshell videos](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/pros_cons_nuclear_energy.png?itok=NVvZ7d08)
What are the Pros and Cons of Nuclear Energy?
STEM Explained
These two “point-counterpoint” videos provide arguments for and against using nuclear energy to generate electricity.
![Cumulus Clouds Cumulus Clouds](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1429189096272-e07dc6aff539.jpg?itok=jW0jC1hP)
Weather: Cumulus Clouds
Picture Collections
5 images of cumulus clouds that are white, puffy clouds with a flat base at mid level and are often associated with fair weather
![Weather Vane](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/weather_vane.jpg?itok=JUERBD4o)
Tools: Weather Instruments
Picture Collections
15 images of various instruments such as rain gauges, wind vanes and weather satellites used to inform us about the weather
![Nitrogen symbol from periodic table](/sites/default/files/styles/resource_card_image_360x300_/public/2021-03/the-periodic-table-element-nitrogen.jpg?itok=bs_Xbeg4)
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?
![Cirrus Clouds Cirrus Clouds](/sites/default/files/styles/resource_card_image_360x300_/public/Cirrus_clouds_mar08.jpg?itok=R93cjlHA)
Weather: Cirrus Clouds
Picture Collections
5 images of cirrus clouds that are wispy or feather-like clouds at high level, made of ice crystals and may indicate an approaching storm
![Cold Cold](/sites/default/files/styles/resource_card_image_360x300_/public/cold.jpg?itok=g55mktjp)
Weather: Conditions
Picture Collections
11 images that illustrate some daily weather conditions such as cold, hot and windy
![International Space Station in the rays of the Sun](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/international-space-station-in-the-rays-of-sun.jpg?itok=XvahdQ2K)
Temperature on Earth and on the ISS
Backgrounders
Temperature is an important part of life on Earth and life in space. This backgrounder explains what temperature is, how it affects people and how it is controlled on the International Space Station.
![Wasted food on the ground](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/food_waste_on_ground.jpg?itok=Hpl8H3ev)
The Environmental Impact of Wasted Food
STEM Explained
One-third of all food produced is wasted. Learn about the environmental consequences of food waste, and what you can do about it.