![Magnified image of a ringwoodite crystal](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/Blue_Ringwoodite.jpg?itok=EeNe4hAV)
Ringwoodite and the Deep Water Cycle
STEM Explained
The water in the oceans has travelled vast distances. It has even time spent deep below the surface of the Earth, trapped inside the mineral ringwoodite.
![Students looking bored in class](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Students_looking_bored_in_class.jpg?itok=Wr5c_zOj)
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?
![Condensation on the window of the Apollo 12 Lunar Module, November 1969](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Condensation_window_Apollo_12.jpg?itok=KtlUs1RV)
Humidity on Earth and on the ISS
Backgrounders
Humidity is an important part of life on Earth and life in space. This backgrounder explains what humidity is, how it is measured and how it affects us both mentally and physically.
![A forest damaged by pine beetles](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/pine-beetle-damage-forest.jpg?itok=rD_omerz)
How Do Introduced Species Affect Ecosystems and the Economy?
STEM Explained
When a species ends up outside of its natural zone, the consequences on other species, ecosystems and human industries can be severe. Climate change and human activities can introduce species into new zones.
![How does rain become acidic?](/sites/default/files/2019-08/how-does-rain-become-acidic.jpg)
How does rain become acidic?
Hands-on Activities
Learn how to make a pH indicator and test water samples.
![Green walls in Harvard University](/sites/default/files/styles/resource_card_image_360x300_/public/2020-05/Green_wall_Harvard_University.jpg?itok=_ivWsw8S)
Green Walls
STEM Explained
Green walls use plant processes to improve air quality in buildings.
![Narwhals, polar bears and other common Arctic animals swim in the Arctic waters. Image © id-work, iStock](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/5755.jpg?itok=CVjIdhgO)
How are Arctic Animals in Canada Affected by Climate Change?
STEM Explained
Arctic animals have evolved to thrive in harsh arctic ecosystems, but the environmental footprint created by climate change is affecting their survival.
![Cartoon aircraft in flight](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Aircraft_in_flight.jpg?itok=MlDYQ0_o)
Cosmic Radiation and Aviation
Backgrounders
Learn how people came to understand the source of cosmic radiation, as well as how this radiation impacts those who work in and travel on airplanes.
![Screen capture from the video “Dealing With Asteroids and Other Space Hazards”](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Asteroids_and_space_hazards.jpg?itok=dCFoyV24)
Dealing with Asteroids and Other Space Hazards
STEM Explained
Find out how asteroids, space debris, and cosmic radiation can be dangerous, and how to monitor them and protect ourselves from these space hazards.
![Energy-saving light bulbs are a great way to save money at home](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/one-hanging-energy-saving-light-bulb.jpg?itok=IocGQakA)
Energy Efficiency at Home
STEM Explained
If you understand heat transfer, you can make lots of little changes at home to help the environment and your household’s bank account!
![Measuring Changes To A Glacier Measuring Changes To A Glacier](/sites/default/files/styles/resource_card_image_360x300_/public/Scientists_measuring_the_terminus_of_Grinnell_Glacier_%284428358942%29.jpg?itok=n0YBXgJE)
Careers: Climatologist
Picture Collections
5 images of some work related to the scientific study of climate such as using instruments to measure changes in climates
![Reporting The Weather Reporting The Weather](/sites/default/files/styles/resource_card_image_360x300_/public/Meteorologist-Reporting-Weather.jpg?itok=dOl3KpeK)
Careers: Meteorologist
Picture Collections
4 images of some work that a meteorologist might do such as forecasting the weather and analyzing clouds
![Ryan Snoddon | Meteorologist and Host (CBC-NL) Ryan Snoddon | Météorologue et animateur (CBC-NL)](/sites/default/files/styles/career_image/public/6308_13.jpg?itok=7JHXXezD)
Ryan Snoddon
Career Profiles
Meteorologist and Host
![Adam Melnick | Apprenticeship Coordinator and Health and Safety Instructor, Heat and Frost Insulator Training Centre Adam Melnick | Coordinateur de l'apprentissage et instructeur en santé et sécurité pour un centre de formation en calorifugation](/sites/default/files/styles/career_image/public/4777_15.jpg?itok=Ye-A392P)
Adam Melnick
Career Profiles
Apprenticeship Coordinator and Health and Safety Instructor
![Brian Camenzuli | VP of Design & Engineering at KARIBU Solar Power Brian Camenzuli | Vice-président, conception et études techniques, KARIBU Solar Power](/sites/default/files/styles/career_image/public/4369_13.jpg?itok=X8Ape7dx)
Brian Camenzuli
Career Profiles
VP of Design & Engineering