KGNU - How On Earth
KGNU - How On Earth
How On Earth is a 25-minute news magazine about science, environment, technology, and more. The show is produced by volunteers at KGNU community radio in the Boulder-Denver area. We collect fascinating science headlines from around the world, produce features about the exciting research being done in our region, and interview the many accomplished scientists that make Colorado their home. How On Earth is also broadcast live at 8:35am (Mountain Time) every Tuesday morning in the Boulder-Denver area on KGNU: 88.5 FM / 1390 AM / Streaming on KGNU.org
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KGNU - How On Earth
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Jul 8, 2026
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Episodes
China’s environmental impact // 100 Year Starship 18.06.2013 26:06
Today, June 18, we offer two features interviews: Feature #1 – China’s Environmental Impact (start time 4:46): China’s meteoric economic rise is causing harmful side effects, ranging from choking air pollution domestically to threatened forests, wildlife and air quality around the globe. Of course China’s per capita greenhouse gas emissions still pale in comparison to … Continue reading "China’s...
Bird collisions and wind energy policy 10.06.2013 23:23
One to two million additional bird deaths per year. Wind is the most rapidly growing energy source in the US, but are environmental protections keeping pace? Tuesday on How On Earth, Kelly Fuller, the American Bird Conservancy’s Wind Campaign Coordinator, talks with Jim Pullen about the impact of big wind on birds. Host: Jim … Continue reading "Bird collisions and wind energy policy"
Cancer Drug Delivery // Mars’ Radiation Risks 04.06.2013 24:40
Enjoy the two features we offer today, June 4: Feature #1 (start time 5:36): Cancer drugs are much more targeted than they were many years ago. But researchers are still trying to find a way to deliver drugs much more precisely to cancer cells, partly to avoid damaging, sometimes lethal, side effects. A huge obstacle … Continue reading "Cancer Drug Delivery // Mars’ Radiation Risks"
Oh Thank You Canada: Lessons from the North on Growing Industrial Hemp 27.05.2013 24:57
(starts at 08:19) At (high? no, not this plant) noon on Tuesday, Governor John Hickenlooper will sign a bill that will legalize growing industrial hemp in Colorado. But it’s been 70 years since hemp was legally grown in the US… Fortunately, because Canada lifted its ban in the 1990s, we can seek the experience of … Continue reading "Oh Thank You Canada: Lessons from the North on Growing Industrial...
Palm oil and rainforest devastation 21.05.2013 22:57
(start time: 07:23) We talk with Lindsey Allen, the Executive Director of the Rainforest Action Network, about the destruction of rainforest from the proliferation of palm oil plantations. Hosts: Jim Pullen, Joel Parker Producer: Jim Pullen Engineer: Joel Parker Executive Producer: Joel Parker Listen to the show:
Larry Gold – Gold Lab Symposium 15.05.2013 24:41
We talk with Larry Gold about this year’s Gold Lab Symposium at CU-Boulder. It features, “The Biological and Social Evolution of Healthcare: Rube Goldberg and Time. Friday, May 17th – Saturday, May 18th, 2013, Muenzinger Auditorium, University of Colorado Boulder. NOTE: After the conference, speaker presentations will be posted at the Gold Lab Symposium site. Hosts: Joel Parker, Jim … Continue...
Brain Trust // Drought 07.05.2013 22:52
Brain Trust (starts at 4:23) When you are trying to make a decision about something important or having a disagreement with someone, don’t you sometimes wish you had a scientist with you – a world expert on the topic at hand – to help you out? In fact, it would be great to have dozens … Continue reading "Brain Trust // Drought"
Dr. David Wineland and the human side of winning the Nobel Prize 01.05.2013 24:29
Today on How On Earth, KGNU’s award-winning science show, we continue our discussion with Boulder’s Dr. David Wineland about the human side of winning the Nobel Prize. The National Institute of Standards and Technology scientist shared the 2012 physics award with France’s Serge Haroche. They’ve developed experimental methods for trapping and holding particles so that … Continue reading "Dr. David...
Mapping Pain in the Brain – CU Scientist Tor Wager 23.04.2013 24:35
Headlines: Climate Change Accelerates Changing Climate Zones – CU-Boulder and CIRES Scientist Irina Mahlstein (starts at 1:00) Family Dogs Harber Family Microbes – CU Boulder Scientist Rob Knight (and the American Gut Project) (starts at 2:26) Sound from the Big Bang – from John G. Cramer (starts at 4:45) Mapping Pain in the Brain (starts at 7:30 … Continue reading "Mapping Pain in the Brain – CU...
Conference on World Affairs Special with SETI’s Seth Shostak 09.04.2013 25:46
Welcome to a special episode of How On Earth with Dr. Seth Shostak, the Senior Astronomer at the Search for Extraterrestrial Intelligence Institute. We’ve been listening for their tell-tale signal for 50 years with no luck, but Seth says that he’ll bet a cup of coffee we’ll hear from them in the next few decades. … Continue reading "Conference on World Affairs Special with SETI’s Seth Shostak"
Everything died under a broiling sky 04.04.2013 10:26
Extinction at the K-Pg boundary CU professor Doug Robertson and a multidisciplinary team argue afresh that a global firestorm swept the planet in the hours after a mountain-sized asteroid vaporized above the Yucatan, 66 million years ago. When the blown-out rock missiled back to earth, Robertson says the atmosphere became so hot the whole world … Continue reading "Everything died under a broiling...
The Universe Within // De-Extinction 03.04.2013 24:03
The Universe Within (starts at 4:40) Within each and every one of us is the history of life on this planet, the planet itself and the entire universe. This is the theme of a new book “The Universe Within.” The author, Neil Shubin, is a professor of Paleontology and Evolutionary Biology at the University of Chicago. … Continue reading "The Universe Within // De-Extinction"
Tom’s River // Making Primitive Fire 27.03.2013 24:45
Tom’s River (starts at 5:03) Susan Moran interviews Dan Fagin, author of the new book Toms River: A Story of Science and Salvation. You’ve likely heard of the chemical contamination of Love Canal at Niagara Falls, in the mid-1970s. And the leukemia cluster linked to water pollution in Woburn, Massachusetts,in the mid-80s — made famous by the book Civil Action. But you may … Continue reading "Tom’...
Neil Shubin -The Universe Within 19.03.2013 25:00
In this spring pledge drive show, How on Earth’s Chip Grandits talks with Neil Shubin, author of the new book, The Universe Within: Discovering the Common History of Rocks, Planets and People. We offer this book to listeners to who call KGNU to pledge their support and bring you more programs like this. Additionally, we … Continue reading "Neil Shubin -The Universe Within"
Facing the Wave // Pandora’s Lunchbox 12.03.2013 24:59
Facing the Wave (starts at 04:50) Yesterday marked the two-year anniversary of the devastating earthquake and tsunami that rocked and partially devoured the northeastern coast of Japan. Although prone to earthquakes, the Tōhoku event hit a magnitude of 9.0, tying it for fourth largest earthquake on record according to the United States Geological Survey—a magnitude greater than … Continue reading...
Facing the Wave – extended interview with Gretel Ehrlich 12.03.2013 24:59
This is an extended version of the interview we broadcast on March 12, 2013, featuring author Gretel Ehrlich discussing the aftermath of the March 11, 2011 Tōhoku earthquake and tsunami in Japan.
We Are the Martians 05.03.2013 24:00
(Start time 5:15) “The Men of Earth came to Mars. They came because they were afraid or unafraid, because they were happy or unhappy, because they felt like Pilgrims or did not feel like Pilgrims. There was a reason for each man. They were leaving bad wives or bad towns; they were coming to find … Continue reading "We Are the Martians"
Parallel Universes 26.02.2013 24:27
The concept of a parallel universe, a universe remarkably like our own but with some subtle difference, has been the staple of science fiction stories for years. But it is an idea that is seriously discussed in real science starting many decades ago when physicists wrestled with the weird implications of Quantum Mechanics, and recently … Continue reading "Parallel Universes"
Parallel Universes – extended interview with Brian Greene 26.02.2013 25:33
This is an extended version of the interview we broadcast on February 26, 2013, featuring Professor Brian Greene discussing the concepts of Parallel Universes.
Bright Meteor // Dark Matter 20.02.2013 23:52
Russian Meteor (starts at 4:28) Just a few days ago on February 15th, a large meteor broke up in the skies over Russia, creating an air blast and sonic boom, which caused damage to buildings that injured over 1,000 people. We talk with Dr. Clark Chapman to ask why the universe is taking potshots at … Continue reading "Bright Meteor // Dark Matter"
U.S. Climate Report // Antarctics Sounds 13.02.2013 24:37
Feature #1 (starts 05:25): A sweeping new report on the state of climate change and its current and future impacts in the United States was recently released in draft form. It’s called the National Climate Assessment. It comes at a time when major storms and wildfires are increasing in many areas. And last year … Continue reading "U.S. Climate Report // Antarctics Sounds"
Dr. David Wineland 07.02.2013 24:52
Today on How On Earth, KGNU’s award-winning science show, we sit down with Boulder’s Dr. David Wineland and chat about his Nobel-prize-winning research. The NIST scientist shared the 2012 physics award with Frenchman Serge Haroche. They’ve developed experimental methods for trapping and holding particles so that weird quantum behaviors can be studied. The research is … Continue reading "Dr. David...
Visindi Circus//Life on Other Planets 29.01.2013 24:33
Headlines: Ice Core Studies How Flu Multiplies Wednesday’s Mini-STEM school features Diana Tomback. Her topic will be: Evolution and the Origin of Life. Features: (5:20 into the show) Shelley Schlender visits the Visindi Circus to learn why some scientists by day become circus performers at night, and how science adds a whole new dimension to circus performances. (13:00 … Continue reading "Visi...
Gut Microbes and Autoimmune Disease // What’s in YOUR Gut? The American Gut Project 22.01.2013 24:11
Headlines: New CU Studies on GroundLevel Ozone, with NOAA’s Sam Oltmans, CU researcher Daven Henze and NASA’s Kevin Bowman Good Cholesterol, Bad Cholesterol and “Ugly” Cholesterol Tonight’s Denver Cafe Sci features Tad Pfeffer: Getting sea level predictions right Features: We look at a new study where researchers, led by Jayne Danska transferred gut microbes from male … Continue reading "Gut Mi...
Haitian Seismologists//Changing Antarctic Climate 15.01.2013 24:31
Feature #1: (start time: 06:03) On January 12, 2010, just over three years ago, a magnitude 7 earthquake shook Haiti, taking more than 200,000 lives and displacing an estimated 2 million. Still today, the International Organization for Migration estimates hundreds of thousands of people are without permanent homes, and in many ways Haiti seems no … Continue reading "Haitian Seismologists//Changing...
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