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Artwork for KGNU - How On Earth

KGNU - How On Earth

KGNU - How On Earth
Climate Change
Colorado
Bird Conservation
CU Boulder
NASA
Greenhouse Gas Emissions
Wolves
Pollinators
PFAS
Ecology
Wildfires
Sustainability
Methane Emissions
Composting
Cement Industry
Federal Funding Cuts
Mental Health
Conservation
Boulder County
Habitat Preservation

The KGNU Science Show

PublishesWeeklyEpisodes766Founded15 years ago
Number of ListenersCategories
Social SciencesScienceNatural Sciences

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Artwork for KGNU - How On Earth

Latest Episodes

On this week’s How on Earth, Beth speaks with Suzanne Simard, professor and researcher at the University of British Columbia, about her book, WHEN THE FOREST BREATHES, both a call to action, and a journey into the heart of British Columbia’s old gr... more

Buy Now Pay Later – is this lending service simply enticing, or is it addictive?  For the GenZ 20 somethings that are its biggest users, is Buy Now Pay Later a danger or a deal?  CU Boulder student and Howonearth volunteer Juliana Krigsman  speaks wi... more

Estrogen on the brain

Credit: Mosconi Lab

The Brain on Menopause (start time: 01:24) In this week’s show, we offer the finale of our three-part series on menopause and women’s health. We focus on a most precious organ: the brain. And we discuss how  ... more

On this week’s How on Earth, Beth talks with neuroscientist and chronic pain researcher Jayson Ball. He recently completed a study of a novel brain circuit involved in generating chronic pain. Since finishing his graduate studies at CU Boulder, he ha... more

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Recent Guests

Christina Metcalf
Assistant Professor, Department of Psychiatry, University of Colorado School of Medicine
University of Colorado School of Medicine
Episode: Women’s Health Pt. III: Menopause & the Brain
Jayson Ball
Chronic pain researcher, PhD neuroscientist
University of Colorado Boulder; Neuralink
Episode: A Brain Circuit That Switches Acute to Chronic Pain
Rich Reading
Wildlife ecologist; Vice President of Science and Conservation at the Butterfly Pavilion; Chair of the Colorado Parks and Wildlife Commission
Butterfly Pavilion; CPW
Episode: Conserving Imperiled Prairie Dogs, Raptors & Their Grasslands
Dana Bovee
Founder of Front Range Nesting Bald Eagle Studies; conservationist
Front Range Nesting Bald Eagle Studies
Episode: Conserving Imperiled Prairie Dogs, Raptors & Their Grasslands
Amy Yarger
Senior Director of Horticulture at the Butterfly Pavilion
Butterfly Pavilion, Westminster, Colorado
Episode: Pollinator Power & Precarity
Jeff Bennett
Astronomer and author
University of Colorado; NASA
Episode: The Scale of the Universe
Dr. Elizabeth Burakowski
Climate scientist focusing on winter climate change and recreation at the University of New Hampshire
University of New Hampshire
Episode: Winter Recreation in a Warmer World
Brooke Osborne
Assistant Professor at Utah State University MOAB campus and a biogeochemist passionate about understanding biogeochemical cycles in ecosystems.
Utah State University
Episode: What do Grasslands Have to do with Climate Change?
Megan Rabbit
Health journalist and author of The New Rules of Women's Health, Your Guide to Thriving at Every Age.
Maria Shriver's The Sunday Paper
Episode: Women’s Health Pt. II: Heart Health

Hosts

Beth Bennett
Host of How On Earth, KGNU Science Show (frequent host/participant across episodes)
Grayson Custin
Host with focus on science topics and show coordination, part of KGNU science programming
Shelly Schlender
Host/Co-host contributing to science show segments
Lorraine Healy
Host focusing on science show content and guest interviews

Reviews

4.3 out of 5 stars from 29 ratings
  • Awesome Podcast!!!

    Beth, host of the KGNU - How on Earth podcast, highlights all energy, science, climate and more in this can’t miss podcast! The host and expert guests offer insightful advice and information that is helpful to anyone that listens!

    Apple Podcasts
    5
    roweereyes
    Philippines4 years ago
  • Interesting

    This is a very interesting show.

    Apple Podcasts
    5
    Lloydmusic
    Canada9 years ago
  • I don't even live in Colorado and I love this podcast

    I discovered this podcast about 6 months ago and have not only listened to every episode since, I have begun downloaded older episodes and listening. Great variety of topics. Knowledgeable hosts and guests. Professionally done podcast. Highly recommended.

    Apple Podcasts
    5
    Old UNIX guy
    United States9 years ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

The overall reception highlights professional delivery, quality guests, and broad topic coverage, though some listeners wish for even deeper dives into certain topics.
Episodes are consistently well-produced with insightful perspectives from diverse experts and clear, actionable takeaways for practitioners and enthusiasts alike.
Listeners praise the show for its accessible yet rigorous science discussions and strong guest lineups.

Chart Rankings

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Talking Points

Recent interactions between the hosts and their guests.

Women’s Health Pt. III: Menopause & the Brain
Q: what can listeners do now to support brain health during midlife
Engage in evidence-based stress reduction, maintain heart-healthy behaviors (exercise, healthy eating, manage cholesterol), and seek supportive resources; participate in research studies to advance understanding and potential interventions for menopause-related brain health effects.
Women’s Health Pt. III: Menopause & the Brain
Q: how does cortisol factor into brain aging during menopause
Chronic cortisol exposure, indicated by hair cortisol, is associated with poorer attention and working memory in late perimenopause, while acute salivary cortisol did not show this association, suggesting that long-term stress exposure is more influential on cognitive function during this transition.
Women’s Health Pt. III: Menopause & the Brain
Q: distill the key findings about childhood stress and menopause symptoms and their mechanisms
Childhood adversity can intensify menopause symptoms and depression risk, and is linked to higher inflammatory markers like IL-6. In a longitudinal cohort, women with two or more ACEs showed worse cognitive performance in late perimenopause, related to chronic inflammatory activity and cortisol exposure rather than acute stress markers.
A Brain Circuit That Switches Acute to Chronic Pain
Q: So can you tell us what's going on when acute pain becomes chronic?
The sensory pathway becomes hypersensitized and the brain pathways processing that input stay highly active, with both neurological and inflammatory mechanisms driving the chronic state. The transition is a spectrum where some pain remains useful but can become maladaptive when it outlasts healing.
Pollinator Power & Precarity
Q: What are two or three things that anyone with a garden can do to help give pollinators and other insects a leg up?
Amy suggests planting a diversity of native species, reducing chemical use like glyphosate, and designing gardens as ecosystems that provide food, shelter, and habitat, thereby supporting a wide range of pollinator species.

Audience Metrics

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Frequently Asked Questions About KGNU - How On Earth

What is KGNU - How On Earth about and what kind of topics does it cover?

This show consistently covers climate, environment, and science with a practical bent toward how research affects real-world decisions—from snowfall and winter recreation economics to grassland carbon storage and urban tree care. Across episodes, guests range from climate scientists and ecologists to public health communicators and policy-focused researchers, often tying scientific insights to policy, industry, and community impact. A standout among these conversations is the frequent pairing of rigorous scientific expertise with accessible storytelling and concrete takeaways for listeners who work in science communication, sustainability, or public policy. The format tends to balance data-driven discussion with implications for practitione... more

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1. Unexplainable
2. The New Yorker Radio Hour
3. This Week in Virology
4. The Ezra Klein Show
5. Radiolab

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KGNU - How On Earth launched 15 years ago and published 766 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on KGNU - How On Earth?

Recent guests on KGNU - How On Earth include:

1. Christina Metcalf
2. Jayson Ball
3. Rich Reading
4. Dana Bovee
5. Amy Yarger
6. Jeff Bennett
7. Dr. Elizabeth Burakowski
8. Brooke Osborne

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