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Science & Medicine

KGNU - How On Earth

KGNU - How On Earth

The KGNU Science Show

Episodes

20 of 788 episodes

Regenerating Cartilage to Heal Osteoarthritis (Achy Knees) CU-Boulder Stephanie Bryant

One million Americans get knee replacements every year, for a cost of up to $70,000 per knee, plus a year-long recovery. CU-Boulder scientis...

24:24Oct 13, 2026

Replaceable You: The Science of Growing Body Parts

The Quest to Replace Human Body Parts (start time: 3:06) In this week’s pledge-drive show, science writer Mary Roach discusses her latest bo...

27:59Oct 6, 2026

Youth+Adult Climate Engagement

From Climate Week to Societal Climate Engagement (start time: 1:22) Last week tens of thousands of people from environmental nonprofit organ...

28:11Sep 29, 2026

Symbiosis – Maybe We Are All Living Together

In this week’s show, Beth speaks with author and evolutionary biologist, Rowan Hooper, discussing the themes and examples of symbiosis from...

27:52Sep 22, 2026

Measuring War: Aaron Clauset

CU Boulder Computer Scientist Aaron Clauset says military leaders frequently underestimate the ultimate length and size of a war. Clauset of...

27:00Sep 15, 2026

How Megafires are Transforming Conifer Forests

Forests Vanishing in Wake of Megafires (start time: 7:55) Increasingly large and hot wildfires are turning many conifer-dominated forests in...

26:42Sep 8, 2026

Screens & Tech Safety . . . in Schools

Teaching through screens is part of getting kids ready for the digital world. But when do tech and screens help students and when do they ge...

26:57Sep 1, 2026

Moving Beyond Climate “Hushing”

Climate “hushing” (start time: 5:41) Since President Trump began his second term as president in January, 2025, his administration, at a diz...

26:51Aug 25, 2026

Take a Pause – With Jillian

In her new book, The Power of the Pause: 90 Seconds to Calm, Reset, and Reconnect, Jillian Pransky teaches readers how a brief 90-second bre...

27:32Aug 18, 2026

Operation Music – Why or Why Not?

A heart attack forced Boulder community leader and journalist Sam Fuqua to need emergency care. While being wheeled into the operating room,...

24:20Aug 11, 2026

Colorado River // Ghostbots

Colorado River Water (starts 1:00) Steep cuts are ahead in the use of Colorado River water by Arizona and California. But what about Colorad...

24:45Aug 5, 2026

Just What is Wilderness?

What is a wilderness, really? Here in the US we think of it as undeveloped land, put aside to appreciate its beauty and remoteness. In other...

28:00Jul 26, 2026

Eat Your Garden!

Gardens are popping up everywhere, from community plots to elementary school yards to vertical plantings. A unique approach proposed by awar...

27:59Jul 21, 2026

Plastics: Health Risks & Solutions

Microplastics: Health Concerns, Solutions (start time: 6:02) The Environmental Protection Agency recently issued a new rule related to monit...

27:00Jul 14, 2026

Poking the Squid – What We Can Learn from Animal Sex

Poking the Squid – Good Reads calls author and illustrator Perrin Roosevelt Ireland’s new book a brilliantly funny, beautifully illustrated...

27:07Jul 8, 2026

Childrearing Tips (and Cautionary Tales) From the Animal Kingdom

Parenting Across the Animal Kingdom (start time: 5:02) As humans, we tend to think that we raise our children with more care than any other...

26:51Jun 30, 2026

Kyle Datta – Energy Security, War & Renewable Energy

Global conflicts are revealing vulnerabilities in the global reliance on imported fossil fuels and centralized power. Energy Analyst Kyle Da...

26:55Jun 9, 2026

Hidden Nations of Animals

Complex Animal Networks (start time: 7:17) As humans, we’re all familiar with, as we live in and are members of, nations. But most of us don...

26:48Jun 2, 2026

Climate Change: Perils and Progress

Climate Change & Action: From the Arctic to Colorado (start time: 2:33) Twenty years ago the Academy-winning documentary An Inconvenient Tru...

26:11May 19, 2026

Silent Sky // Gold Lab Symposium

Protest It, Respect It, Defend It, Use It (starts 1:00) Friday at Denver Patagonia and Saturday at Boulder Patagonia environmental activists...

26:50May 12, 2026