![Snowflake](/sites/default/files/styles/resource_card_image_360x300_/public/2020-10/snowflake.jpg?itok=DpMn15sa)
Weather: Precipitation
Backgrounders
Learn about humidity and the many forms of precipitation.
![Clouds seen from an airplane](/sites/default/files/styles/resource_card_image_360x300_/public/2020-04/Clouds_seen_from_airplane.jpg?itok=tBkpJ-LY)
Weather: Clouds
Backgrounders
Learn how clouds form and how they can be grouped into different categories
![Cow](/sites/default/files/styles/resource_card_image_360x300_/public/2020-03/Cow.jpg?itok=K9RkR2Rv)
Cows, Methane, and Climate Change
STEM Explained
How do beef and dairy cows contribute to climate change? Livestock agriculture is a source of methane, a powerful greenhouse gas.
Krysten Rutherford
Career Profiles
PhD Candidate, Oceanography
![Dense tropical rainforest](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/tropical-dense-cloud-forest-coverd-in-fog.jpg?itok=hZ-ak9O8)
Tropical Rainforest Biome
Backgrounders
Learn about the location, plants, animals, human impacts and conservation of tropical rainforest biome.
![African savanna](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/African_savanna.jpg?itok=47nbBHlh)
Savanna Biome
Backgrounders
Learn about the location, plants, animals, human impacts and conservation of the savanna biome.
![Sheridan Thompson sur une falaise rocheuse](/sites/default/files/styles/career_image/public/2020-01/Sherida%20Thompson.jpg?itok=rfrdPBCc)
Sheridan Thompson (she/her/they/them)
Career Profiles
Doctoral Candidate
![Variety of plant groups in Banff National Park, Alberta](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/plant_taxonomy_banff.jpg?itok=xQe0JVAi)
Plant Taxonomy
Backgrounders
Learn about the categories, or phylum, of the plant kingdom with examples from each.
![Leaf and the Sun](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Plant_Functions.jpg?itok=60gbqGFi)
Plant Functions
Backgrounders
Learn about the important plant functions of photosynthesis, respiration and transpiration
![Soonwoong Kwon | Spécialiste en météorologie tactique (SMT)](/sites/default/files/styles/career_image/public/2019-09/Soonwoong%20%20Kwon.jpg?itok=LuApy2oT)
Soonwoong Kwon
Tactical Weather Specialist (TWS)
![Keven Bruce | Tactical Weather Specialist](/sites/default/files/styles/career_image/public/2019-09/Kevin%20Bruce.jpg?itok=-QI0mlRn)
Keven Bruce
Career Profiles
Tactical Weather Specialist
![Holly Wortman | Technicienne en météorologie](/sites/default/files/styles/career_image/public/2019-09/Holly%20Wortman.jpg?itok=09ULO4op)
Holly Wortman
Meteorological Technician
![Alan Bezanson | Instructeur principal en météorologie](/sites/default/files/styles/career_image/public/2019-09/Alan%20Bezanson.jpg?itok=dAofygLK)
Alan Bezanson
Senior Meteorological Instructor
![Scott Kelly et Terry Virts inspectent le système d’élimination du dioxyde de carbone de la SSI (Photo via Wikimedia Commons)](/sites/default/files/styles/resource_card_image_360x300_/public/2019-08/6572.jpg?itok=uSk7J690)
Carbon Dioxide on Earth and on the ISS
Backgrounders
Carbon dioxide is an important part of the air on Earth and in space. What is carbon dioxide? How is it measured? How can it affect us mentally and physically?