# How Many Species Are There on Earth?

Page: https://stenobird.com/podcast/green-frequency-environmental-science-earth-radio-7796532/how-many-species-are-there-on-earth
Text version: https://stenobird.com/podcast/green-frequency-environmental-science-earth-radio-7796532/how-many-species-are-there-on-earth.md
Podcast: [Green Frequency | Environmental Science & Earth Radio](https://stenobird.com/podcast/green-frequency-environmental-science-earth-radio-7796532)
Published: 2026-05-26T22:00:00+00:00
Episode link: https://shows.acast.com/green-frequency/episodes/how-many-species-even-are-there
Audio file: https://sphinx.acast.com/p/open/s/6991eca8483d38b26e6ccf2d/e/6a0c48773aa9b90ba24a7c8b/media.mp3
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JSON: https://stenobird.com/v1/public/podcasts/green-frequency-environmental-science-earth-radio-7796532/episodes/how-many-species-are-there-on-earth
Duration seconds: 1407

## Resource

Most of Earth's species remain unknown to science. Marine biologist and taxonomist Dr. Manuel Caballero Gutierrez explains how scientists estimate global biodiversity and why humanity may currently know only about 25 percent of the species that exist. He walks through taxonomy as scientific detective work, from deep-sea expeditions and specimen collection to anatomical study, DNA analysis, museum archives, formal naming, and publication. The episode examines biodiversity loss, why the shortage of taxonomists matters, how scientific knowledge can disappear with individual specialists, and why species may go extinct before humanity knows they exist. An expansive introduction to biodiversity, ocean exploration, and the ecological research that conservation depends upon. Episode Guests: Dr. Manuel Callebar Gutierrez Browse Dr. Callebar Gutierrez’s publications on Research Gate WATCH THE FULL VIDEO ON YOUTUBE Explore the Pine Forest Media digital ecosystem on our website Find the full-length video on YouTube @PineForestPods Follow us on Social Media @pineforestmedia Audio Editing by Clark Marchese, Video Editing by Oscar Padula Videography and Set Design by Le Studio Du Passage Cover Art by Laurel Wong Theme music by Nela Ruiz Find some more Pine Forest Media podcasts below Listen to Oceanography on Spotify or Apple Podcasts Listen to Plastic Podcast on Spotify or Apple Podcasts Listen to South Pole on Spotify or Apple Podcasts Listen to Something in the Water on Spotify or Apple Podcasts Hosted on Acast. See acast.com/privacy for more information.

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## Transcript

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