SGU Episode 937

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SGU Episode 937
June 24th 2023
937 coastal erosion.jpg

"Although sand dunes often conjure images of great deserts, they also occur along coastlines worldwide and can be an important buffer against sea level rise, storms, and coastal erosion." [1]

Click for detailed caption

"More than 45% of southern California's coastline is groomed with machinery used to remove debris from sandy beaches, creating a flat topography ideal for recreational activities of the local population and tourists. However, vegetation is consequently actively discouraged from growing, reducing habitats for local wildlife and resulting in some native and threatened species becoming locally extinct.

"Oblique aerial photograph of the restoration project site from the 10 November 2022 UAS flight, with key elements labeled including the project boundary, perimeter fence, various habitat types, adjacent groomed beach (control site), and the incipient foredune ridge." Credit: Frontiers in Marine Science (2023).

SGU 936                      SGU 938

Skeptical Rogues
S: Steven Novella

B: Bob Novella

C: Cara Santa Maria

J: Jay Novella

E: Evan Bernstein

Quote of the Week

Science is the acceptance of what works and the rejection of what does not. That needs more courage than we might think.

Jacob Bronowski, Polish-British mathematician and philosopher

Download Podcast
Show Notes
Forum Discussion

Introduction, submersible sinks down to the Titanic[edit]

Voice-over: You're listening to the Skeptics' Guide to the Universe, your escape to reality.

News Items[edit]






(laughs) (laughter) (applause) [inaudible]

Neuroforecasting (14:43)[edit]

Coastal Erosion (34:34)[edit]

S: I'm in favor of them.

C: They're really big and pretty.

E: "It's coarse. It gets everywhere." Was that what you--

C: --Oh god.

B: Anakin would hate them.

C: Saw that coming.

Milky Way’s Supermassive Black Hole (44:36)[edit]

Aliens in Vegas (52:11)[edit]

Alcohol Use Disorder (1:03:13)[edit]

Who's That Noisy? (1:15:44)[edit]

New Noisy (1:20:20)[edit]

[raspy warblings]


Announcements (1:20:48)[edit]


Correction #1: Latitude and Daylight (1:23:47)[edit]

Question #1: Debating RFK Jr. (1:27:23)[edit]


Science or Fiction (1:34:03)[edit]

Theme: Lesser-known dramatic events

Item #1: Often called the forgotten genocide, in the 1880s, the Ottoman Empire engaged in ethnic cleansing in the region of Astrakhan, killing over 1 million native Cossacks, and ultimately absorbed the territory.[6]
Item #2: In 1919, in Boston's North End, a large tank ruptured, spilling 2 million gallons of molasses, which raged through the streets at 35 miles per hour, killing 21 people and injuring 150.[7]
Item #3: In 1862, some soldiers in the Battle of Shiloh noticed that their wounds glowed green-blue, and these wounds seemed to heal faster than non-glowing wounds. Recent investigations suggest the glow was due to bioluminescent bacteria seeded in the wounds by nematodes.[8]

Answer Item
Fiction Forgotten genocide
Science Molasses disaster
Glowing wounds
Host Result
Steve win
Rogue Guess
Forgotten genocide
Glowing wounds
Forgotten genocide
Glowing wounds

Voice-over: It's time for Science or Fiction.

Cara's Response[edit]

Jay's Response[edit]

Evan's Response[edit]

Bob's Response[edit]

Steve Explains Item #2[edit]

Steve Explains Item #1[edit]

Steve Explains Item #3[edit]

Skeptical Quote of the Week (1:48:39)[edit]

Science is the acceptance of what works and the rejection of what does not. That needs more courage than we might think.

Jacob Bronowski (1908-1974), Polish-British mathematician and philosopher


S: —and until next week, this is your Skeptics' Guide to the Universe.

S: Skeptics' Guide to the Universe is produced by SGU Productions, dedicated to promoting science and critical thinking. For more information, visit us at Send your questions to And, if you would like to support the show and all the work that we do, go to and consider becoming a patron and becoming part of the SGU community. Our listeners and supporters are what make SGU possible.


Today I Learned[edit]

  • Fact/Description, possibly with an article reference[9]
  • Fact/Description
  • Fact/Description


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