KGNU - How On Earth
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KGNU - How On Earth
The KGNU Science Show
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741 episode
Into The Unknown (Part 2)
Into The Unknown (starts at 9:05) What do we know about the universe, and how do we know we know it? Conversely, what do we know we don’t know, what d...
Into The Unknown (Part 1)
Into The Unknown (starts at 7:57) What do we know about the universe, and how do we know we know it? Conversely, what do we know we don’t know, what d...
Autumn Insects and their Songs
Science & Songs of Katydids, Cicadas, etc. (start time: 3:08) It’s the time of year to savor listening each night to the pulsating and clicking sound...
From Habitat Loss to Repairing Connectivity
Helping Wild Animals Roam (start time: 3:29) Wild animals, whether buffalos or bats, need space to move around–not just to survive, but to forage, ...
Science Journalism with Miles O’Brien // Acetaminophen and Autism
This episode features Miles O’Brien, a science journalist who has been a correspondent for PBS News and CNN. He talks about his experience breaking in...
What About All Those Body Products We Buy?
On this week’s How On Earth, Beth spoke with two cosmetic chemists, hosts of the podcast The Beauty Brains. We touched on some basic questions I have...
Menopause, Hormone Therapy, Science
Menopause & HT (start time: 0:58) It happens to every woman with a uterus who reaches midlife. Menopause is a major hormonal transition that, althou...
The (ever-changing) Scoop on Vaccines
On this week’s How on Earth, Beth describes recent developments in defunding NIH research and CDC limits on vaccine availability; then digs into vacci...
Climate Change, Astronomy, Canine Astronauts
Climate change. Astronomy. A canine astronaut. They intersect in our guest, astronomer and author Dr. Jeff Bennett. Among other things, we focus on c...
Bill McKibben – Here Comes the Sun
US Critical Earth Metals “Hiding in Plain Sight” (starts 1:00) Colorado School of Mines has just published a new study that indicates the US has eno...
Wildfires in a Changing Climate
On this week’s show we replay an interview from two years ago with author John Valliant on his then-newly released book, Fire Weather, the story – and...
Climate Science, Human Lives at Risk
Standing Up for Science (start time: 6:39) Since President Trump began his second term in January, his administration has been on a rapid-fire campai...
The Vera Rubin Observatory
The history of astronomy has many stories of trying to understand our universe, and those stories are connected by a common thread: looking at the sky...
50 Years of Open Space! // Heart Attack and Stroke Risk from Common Sugar Substitute
A Common Sugar Substitute Increases Risk of Heart Attack and Stroke. (starts 11:00) CU-Boulder Integrative Physiologist Chris DeSouza explains his r...
The Tumor Microbiome Can Affect Cancer Survival
On this week’s show Beth speaks with computational biologist Justine Debelius about the role of the microbiome. We first discussed a study she was inv...
Climate Science, Cutbacks, Litigation
Tackling Climate Change and Science Cutbacks (start time: 7:03) In this week’s show we discuss the ongoing barrage of executive orders by the Trump ad...
How We Grow Up: Understanding Adolescence by Matt Richtel
Teens are in Crisis – Some people warn that Cell Phones are to blame. But Colorado Native and Pulitzer prize winner Matt Richtel says our tech can be...
Bird Conservancy of the Rockies – Eric DeFonso
Merlin Bird ID App (starts 1:00) Boulder Naturalists Steve Jones and Ruth Carol Cushman explore the benefits of the Merlin smartphone app, along with...
Viruses are Us!
In this week’s science show Beth talks with genome biologist Ed Chuong of CU Boulder’s innovation incubator, the Biofrontiers Institute. Ed takes us f...
2025 Graduation Special (part 2)
With graduation season upon us, today’s edition of How on Earth is Part 2 of our annual “Graduation Special”. Our guests in the studio today are scien...
GLP-1 and Blindness
We talk with scientists who report that a common weight loss/diabetes drug known as a GLP-1 receptor agonist (Wegovy, Ozempic for instance) is associa...
Animal Pandemics?
On this week’s How on Earth, Beth talks with author and science journalist Liz Kalaugher, about her new book, The Elephant in the room:How to Stop Mak...
Saving Weather Forecasting, Climate Science
Scientists speak out for science (start time: 1:00) The Trump administration has been on a dizzying streak of slashing federal funding for scientific...
Birds at Risk
Birds: Risk and Resilience (start time: 5:55) What speaks of Spring more than the songs of American robins, yellow warblers, spotted towhees and othe...
Boulder Cardiologist Nelson Trujillo – Extended Version
This is an extended version of our interview with Boulder Cardiologist Nelson Trujillo. For the broadcast version, go here. Producer: Shelley Schl...
GoldLab Founder Larry Gold – Extended Interview
This is Shelley Schlender’s extended interview of Larry Gold, founder of the GoldLab Symposium. For the broadcast version, go here. Producer: Shell...
2025 Graduation Special (part 1)
With graduation season upon us, today’s edition of How on Earth is Part 1 of our annual “Graduation Special”. Our guests in the studio today are scien...
Mutualism in Nature
Sweet in Tooth and Claw (start time: 0:59) Since the 1800s, science has been obsessed with the notion, stemming from Charles Darwin’s theory of evolu...
De-funding NIST’s Atomic Spectroscopy Group
Federal cutbacks have led the National Institute of Standards and Technology to shut down a long-running, highly prized information center used by sci...
The Lucy Mission
Our guest today is Dr. Simone Marchi, Institute Scientist in the Solar System Science & Exploration Division at the Boulder office of Southwest Resear...
Poisoning the Well: How Forever Chemicals Contaminated America.
Poisoning the Well (starts 2:00) Boulder science writer Sharon Udasin discusses her new book, Poisoning the Well: How Forever Chemicals Contaminate...
April Foolish Science
Today is April Fools’ day, when jokes and pranks are played, sometimes among friends and family, sometimes on a more public scale. But why is there s...
NEPA, Wildlife, Lands Under Threat
NEPA rollbacks, environmental impacts (start time: 6:25) Amidst a flurry of moves by the Trump administration to roll back environmental regulations,...
Measles: To Vaccinate or Not?
On this week’s show, Beth talks with Brianne Barker, Associate Professor of Biology and Director of Undergraduate Research at Drew University. Dr Bark...
This Ordinary Stardust: A Scientist’s Path from Grief to Wonder
We speak with Environmental Scientist Alan Townsend about his new book, This Ordinary Stardust: A Scientist’s Path from Grief to Wonder. It chronicle...
Train Wolves AND Humans to Coexist
On today’s show, Beth speaks with two experts on animal behavior and training about the wolf reintroduction project in Colorado – wins and losses. Mar...
Tom Cech: The Catalyst
The Catalyst: RNA and the Quest to Unlock Life’s Deepest Secrets CU Boulder Nobel Prize-Winning Scientist Tom Cech says that RNA has long been the...
Tackling Landfill Methane Emissions
Tackling CH4 emissions from landfills (start time: 5:59) Methane is an extremely potent greenhouse gas, and its emissions have been rising recently in...
How a Soil Bacterium Can Affect Mental and Physical Health
On today’s show, Beth speaks with CU scientist Christopher Lowry. Dr. Lowry’s research program at CU Boulder focuses on understanding stress-related p...
Decarbonizing Cement Production
Tackling Cement’s Huge Carbon Footprint (start time: 0:58) It’s hard to imagine modern society without a key material that so many structures depend...