Science Friday

Beavers are having a moment, thanks to the new Pixar movie “Hoppers.” Amid some body-swapping shenanigans, the film is about humans coexisting with wildlife—particularly oversized rodents capable of reworking landscapes in profound ways. 

The beaver science consultant on “Hoppers,” Emily Fairfax, joins Flora to talk about beavers’ brilliant, chaotic landscape engineering, and how the creatures show up in the movie. Then, reporter Zac Ziegler walks Flora through a successful beaver-centric engineering project in Oregon. 

Guests: 

Emily Fairfax is an assistant professor of geography at the University of Minnesota. She was a science consultant for the Pixar movie “Hoppers.”

Zac Ziegler is a reporter at KLCC in Eugene, Oregon.

Other episodes you may enjoy:

How The Humble Beaver Shaped A Continent

Beavers Build Ecosystems Of Resilience

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

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Deep in an active nickel mine near Sudbury, Ontario, researchers are installing and calibrating a set of sensitive detectors. They hope that the location roughly 6,800 feet underground will screen out much of the ordinary radiation and cosmic rays felt on the surface, and allow their detectors to sense tiny disturbances caused by a dark matter particle passing close to the nucleus of one of the germanium atoms in a target material.

If successful, the SuperCDMS SNOLAB experiment may shed some light on the nature of dark matter, an unseen something that is thought to make up around 85% of the matter in the universe.

Priscilla Cushman, a physicist who has been working on the project for over 20 years, joins Host Flora Lichtman to describe the hunt, the timeline of the experiment, and the big unknowns facing the SuperCDMS team. 

Guest: 

Dr. Priscilla Cushman is spokesperson for the SuperCDMS SNOLAB experiment, and a professor in the School of Physics and Astronomy at the University of Minnesota.

Other episodes you may enjoy:

Listening for the cosmic ‘dark ages,’ from the lunar far side

Most Powerful Neutrino Ever Is Detected In the Mediterranean

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-4-SCIFRI

Hurricane season officially begins in June. And in the event of a big storm, local and state governments often rely on help from the Federal Emergency Management Agency or FEMA. But, President Trump has questioned the value of the agency.  

“I've never been a big fan of FEMA. I like to keep it local. I like to see governors and neighboring states help each other as opposed to FEMA,” Trump said in March.

We’ve heard this from the administration about other federal agencies, but FEMA is a special case. People have mistrusted this agency since its founding in the late 1970s.  

Host Flora Lichtman talks with Micah Loewinger, co-host of the show “On The Media,” who traced FEMA’s history in a new series called “American Emergency: The Movement to Kill FEMA.”

Guest: 

Micah Loewinger is co-host of On The Media.Other episodes you may enjoy:

As Disasters Escalate, What’s The Future Of FEMA?

Can We Geoengineer Our Way Out Of A Natural Disaster?

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-4-SCIFRI

Animal neuroaudiologist Pete Scheifele joins us to answer some burning questions from SciFri listener Paul: Why can dogs and cats hear a wider range of frequencies than we do? Is it in their ears, their brains? And what would life be like if you had dog ears or cat ears?

And, scientists have created the first “smell map” of the nose using a mouse model. Host Flora Lichtman talks with neurobiologist Bob Datta about this latest research, and what it tells us about olfaction.

Guests: 

Dr. Pete Scheifele is a neuroaudiologist at the University of Cincinnati and executive director of the FETCHLAB, an animal audiology clinic and lab.

Dr. Bob Datta is a neurobiologist at Harvard Medical School.

Other episodes you may enjoy:

What’s That Smell? An AI Nose Knows

Blood In The Water: Shark Smell Put To The Test

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-4-SCIFRI

The news we hear about plastic is often alarming: We have a spoon’s worth of plastics in our brains, and there are microplastics in our hearts, lymph nodes, and bloodstreams. Plastics are ubiquitous, but the reality might be more complicated than it seems. 

It turns out that measuring microplastics is really, really difficult. One reason? Because we’re surrounded by plastics! Think of the pipettes and petri dishes and gloves we use in labs.

Host Flora Lichtman chats with microplastics researcher Cassandra Rauert about the difficulties of studying plastics in the human body and what she’s doing about it—like how she designed a whole lab made almost entirely of stainless steel and glass. 

Guest: 

Dr. Cassandra Rauert is a senior research fellow studying microplastics exposure at the University of Queensland in Australia. 

Other episodes you may enjoy:

Can algae help pull microplastics out of our water supply?

Where Does Plastic And Other Trash Go After We Throw It Away?

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-4-SCIFRI