- H.C. Ørsted Lectures
- Habilidade Materna Ovina
- Habitat Destruction
- Habitat loss with David Attenborough
- Hablan2 de huesos
- Hablando con Científicos - Cienciaes.com
- Hablando De Diversos Temas
- Hablemos De Agroecología
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- Hagamos un Cambio Ambiental ˎˊ-
- Haji
- Hallazgo del reptil más pequeño del mundo
- Hambientar
- Hamilton Institute Seminars (HD / large)
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- Hangout Podcast
- Hannah and Erik Go Birding
- Hanseníase em 4 vozes.
- Harry Kean
- Harvard Medical Labcast
- Hashtag Science
- Hatak's AP Chemistry Podcast
- Hauntingly Ever After
- Haute définition - RTS
- HaveaBaby.com Live
- Havpodden
- Hawaiian Diving Stories
- Hawai‘i Volcanoes National Park
- Head in the Clouds
- Headful Science
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- Healthy Living - Green Patriot Radio
- Hearing Mechanism In Human
- Hearing the quantum
- Heart Failure Focus
- Heart Of Texas Paranormal
- Heat Energy
- Heat Waves
- Heating the Future
- Heidi_zairel
- Heimaverkefni 6
- Helder - over water
- Hellige Samtaler
- Helmintíases: Ascaridíase
- Help! Tolong Pedulilah
- Hematopoiesis: An ASH Trainee Council Production
- Henry Rzepa, talks and Presentations
- Here Are 5 Eliat Tourist Destination
- Here Comes the Sun
- Here We Go
- Herr Faktencheck
- Herschel und das unsichtbare Ende des Regenbogens
- Hessen schafft Wissen
- HETDEX: The Search for Dark Energy
- Hex-Files
- Hey! I Got a Question About That
- Hidden Brain
- Hidden Stories of The Royal Parks
- Hidden Universe: NASA's Spitzer Space Telescope
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- High Pressure Podcast
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- Hillbilly Horror Stories
- Himagreto
- HIMAGRO UNSIL
- Hinir íslensku náttúrufræðingar
- Hinter dem Zoo geht's weiter - Der Naturschutzpodcast aus Frankfurt
- Hipersensibilidade Humana — Imunologia
- Hippie Science Variety Hour
- Hirn & Heinrich – der Wissenspodcast des DZNE
- Hirnforschung und Musikproduktion
- HirnStammtisch
- Histiologia
- Histologia
- Histologia Cartilagem
- Histología
- Historias Cienciacionales: el podcast
- Historias de un estudiante de física
- Historias, Cuentos Y Explicaciones Para Clases de Ciencias by Miru
- Historicidade da ciência
- Historicismo
- History of the Earth
- História de Ciência
- História E Ciência
- Histórias do Projeto Pegadas
- Histórias Filosóficas
- Hitchhiker's Guide to Nuclear (Blog and Podcast)
- HMI Komisariat Sunan Ampel
- Hoard's Dairyman DairyLivestream Podcast
- Hoje é o dia!
- Hold That Thought
- Holistic Creators
- Holistic Healthy Living Podcast
- Hollyweird Paranormal
- Hollywood Science
- Home and High Water
- Home Show Garden Pros Radio
- Homesteading and Permaculture by Paul Wheaton
- HomoSapiens
- Honey Bee My Teacher
- Hora da Biologia
- Hormesis Podcast
- Horsing around with the Big Bang Theory
- Hortas Urbanas Podcast
- Hospital Veterinario
- Hot + Steamy Podcast
- Hot and Dry Podcast
- HOTSPOT
- Hotspot - Der Pandemie-Talk mit Katja Burkard und Hendrik Streeck
- House Warming
- How Do I Do This: An Environmental Career Podcast
- How Plastic Effects our Oceans
- How Stars Evolve
- How The Body Works
- How To Conserve Conservationists
- How To Grow A Human
- How to health your human
- How to save the environment from home
- Huella Ecología e Hídrica
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- Humanity Podcast
- Humans And Robots
- Humans on Earth
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- Hunting Ain't Easy
- Hunting Science
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- Hydroelectric Energy