![Thermal images of people and objects](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Thermal_images_of_people_and_objects.png?itok=5vLkf21V)
Thermopower and the Body Heat-Powered Flashlight
STEM Explained
Can your body be a source of electricity generation? Maybe, if you understand heat transfer. Explore this concept through a 2013 invention by a Canadian teen.
![City at night with transmission lines](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/City_at_night_with_transmission_lines.jpg?itok=UiKbdb4e)
Understanding Electricity Supply and Demand
Backgrounders
Electricity demand changes constantly. Suppliers need to generate more electrical energy when demand is high, and less when demand is low.
![Heat pump diagram](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Heat_pump_diagram.png?itok=0BIHVWMg)
Tapping Underground Energy with Heat Pumps
STEM Explained
Using the heat of the Earth’s interior, you can heat your home with a ground source heat pump. This kind of heating is cheaper and better for the environment!
![Bacteria can be used to generate electricity](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Microbial_fuel_cell_icon_1.jpg?itok=tkWwcU0G)
Microbial Fuel Cells
STEM Explained
In a few decades, some of the electricity you use might be generated by bacteria.
![illustration of a hydrogen car](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Hydrogen_car.png?itok=-Ul7H9-e)
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.
![Wind turbines with energy storage system](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/wind_turbines_with_energy_storage.jpg?itok=LY0Hfznj)
Can You Store Electricity for Later?
STEM Explained
Sometimes, power plants make too much electricity. Energy storage technologies can help! They store the extra electricity and release it when demand goes up.
![Terence Brouwer - Manufacturing Operations Manager](/sites/default/files/styles/career_image/public/2019-08/6506_28.png?itok=rryIhGW1)
Terence Brouwer (Video)
Manufacturing Operations Manager
![Terence Brouwer | Manufacturing Operations Manager Terence Brouwer | Gestionnaire des opérations de fabrication](/sites/default/files/styles/career_image/public/6506_26.png?itok=gLc0LluV)
Terence Brouwer
Career Profiles
Manufacturing Operations Manager
![Emily Jobson | Environmental Specialist Emily Jobson | Spécialiste de l’environnement](/sites/default/files/styles/career_image/public/4607_13.jpg?itok=eaWXYTXC)
Emily Jobson
Career Profiles
Environmental Specialist
![Brendan MacDougall | Completions Engineer Brendan MacDougall | Ingénieur en forage](/sites/default/files/styles/career_image/public/4601_13.jpg?itok=-FFWz7kR)
Brendan MacDougall
Career Profiles
Completions Engineer