1964 Alaska Earthquake (start time 04:37) This week 50 years ago, in 1964, the Beatles were huge, Alaska had only been a state for a mere five years, and the theory of plate tectonics was in toddlerhood. This Thursday, March 27, also marks the 50th anniversary of the magnitude 9.2 Great Alaska Earthquake of 1964.
This earthquake changed our thinking about how the world works by showing us the hard way that tsunamis can arrive before the ground even stops shaking, that we can look in sedimentary records to recognize past great earthquakes offshore in places like the Pacific Northwest, and that these huge earthquakes rip the Earth open along a plane rather than in bits and pieces. What you’ll hear on today’s show is just the tip of the seismic iceberg: How the earthquake confirmed subduction, which is where one tectonic plate plunges under another. Beth Bartel speaks with Dr. Mike West, the Alaska State Seismologist and Director of the Alaska Earthquake Center, about his recent paper, “Why the 1964 Great Alaska Earthquake Matters 50 Years Later,” published in Seismological Research Letters.
Neuroscience of Dying (start time 12:38) If there’s one thing more certain than taxes—pardon the reminder—it’s death. It may be certain, but it’s still one of life’s biggest mysteries. On today’s show, we explore what neuroscience can tell us about chemical and hormonal releases that can occur as we near the threshold of death.
For instance, many people have written about so-called near-death experiences. It’s when your heart stops. You walk effortlessly toward a tunnel. You see a blast of white light. You might call it Heaven. Visions like these that people report they’ve had have some biochemical underpinnings.
To help us understand the limited but fascinating body of scientific research regarding the neurobiology and chemistry of dying, Susan Moran talks with Dr. Ilene Naomi Rusk. Rusk is a psychologist who specializes in neuropsychopharmacology and co-directs The Brain and Behavior Clinic in Boulder.
Hosts: Beth Bartel and Susan Moran
Producer: Beth Bartel
Engineer: Shelley Schlender
Executive Producer: Jim Pullen
Additional contributions: Jane Palmer and Ted Burnham
Listen to the show:
Podcast: Play in new window | Download (Duration: 24:03 — 33.0MB)
Today marks the 50th anniversary of the 1964 Great Alaska Earthquake. To commemorate the quake, we’re posting this extended version of the interview we broadcast on March 25, 2014, with Dr. Mike West, the Alaska State Seismologist and Director of the Alaska Earthquake Center. How On Earth host Beth Bartel talked with Dr. West about his recent paper, “Why the 1964 Great Alaska Earthquake Matters 50 Years Later,” published in Seismological Research Letters.
To whet your appetite, here are some of the topics we covered:
- How this earthquake fit in to the still-young idea of plate tectonics.
- How geodesy–the study of the shape of the Earth and how it changes–helped nail this event down as a subduction earthquake. (Also: How the simplest explanation is not always the right one.)
- Monitoring: Where we were then, where we are now.
- Why we should look to Alaska to test out earthquake early monitoring systems.
- How this quake led us to see that the same thing could–and has–happened off the coast of the Pacific Northwest.
- Local tsunamis, and what we should do about them.
Podcast: Play in new window | Download (Duration: 34:32 — 47.5MB)
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 scientists thought possible for this region.
Last month, co-host Beth Bartel spoke with author Gretel Ehrlich about her recently published book “Facing the Wave: A Journey in the Wake of the Tsunami.” When asked about her motivation to write this book, Ehrlich, a long-time traveler to Japan, said simply that she went to see the effects of the wave because she had to. (Go to our extended interview for more about how the disaster spurred activism in Japan.)
Pandora’s Lunchbox (starts at 14:38) Did you ever think how long that energy bar you ate while skiing recently would last in tact beyond the expiration date? Or that bag of Oreo cookies you devoured last night? Melanie Warner, a local journalist and former staff writer at the New York Times, started thinking about it so much that she began experimenting with leaving some processed foods out way beyond their expiration date. What she found was shocking, and led her to explore deeply into the “processed food industrial complex.” The result is a new book called “Pandora’s Lunchbox: How Processed Food Took Over the American Meal.” Co-host Susan Moran interviews Warner about the creators and health impacts of many iconic foods in the American diet.
Hosts: Susan Moran, Beth Bartel
Producer: Beth Bartel
Engineer: Jim Pullen
Executive Producer: Shelley Schlender
Listen to the show:
Podcast: Play in new window | Download (Duration: 24:59 — 34.3MB)