Coming February 21, 2026

No Blueprint for the Moon:
Navigating the Unknowns of Extraterrestrial Construction


Dr. Caitlin Ahrens

This presentation examines lunar architecture not as science fiction, but as an applied problem in risk management, engineering under uncertainty, and evidence-based design. We will explore what it would actually mean to plan and build structures on the Moon, where our geotechnical data are sparse, environmental hazards are extreme, and many Earth-based design assumptions simply do not hold. We will delve into strategies for site planning in an extreme, unfamiliar environment, where Earth-based assumptions must be rethought. Key challenges discussed include working with limited data, potential hazards from the environment, and the need for adaptable, resilient design solutions in lunar conditions.

Dr. Caitlin Ahrens is an assistant research scientist at NASA Goddard Space Flight Center, and the University of Maryland. She is a member of the Diviner Science Team with the Lunar Reconnaissance Orbiter. In collaboration with Artemis, she serves as a technical support scientist to assist in risk assessments of astronaut, rover, and lander activity at the lunar surface. Dr. Ahrens is Principal Investigator on a recent lunar sustainability work funded by the (former) NASA Office of Technology, Policy and Strategy. She also is a member of the American Society of Civil Engineers (ASCE) working on how lunar architectures should be monitored for hazards, including construction, at the lunar surface. 


February 21, 2026, 1:30 PM
B-CC Regional Services Center
4805 Edgemoor Lane 2nd Floor (West Room)
Bethesda, MD

Directions: https://tinyurl.com/visitbcccenter

FREE admission – Everyone welcome, members and non-members
Check back here for a link to stream live.


Coming on January 10, 2026

"Everything you wanted to know about coronaviruses but were afraid to ask."

Laura H. Kahn MD, MPH, MPP, author of One Health and the Politics of COVID-19


Using an interdisciplinary One Health approach, Dr. Laura Kahn will draw upon material from her book, One Health and the Politics of Covid-19, to talk about the history, science, research, and politics of coronaviruses. One Health is the concept that human, animal, plant, environmental, and ecosystem health are linked. This is a relatively new term, but an ancient concept recognized by indigenous peoples around the world.

Coronaviruses are zoonotic viruses, meaning that they originate in non-human animals (i.e., bats) and spread to humans. The most well-known coronaviruses are Severe Acute Respiratory Syndrome (SARS), Middle East Respiratory Syndrome (MERS), and Covid-19. Unlike SARS and MERS, which emerged in 2002 and 2012, respectively, Covid-19 appears unusual in some of its clinical manifestations. The gold standard evidence used to prove the natural origins of the earlier coronavirus epidemics is lacking with Covid-19. The origin of this virus remains controversial.


Coronaviruses were first discovered by veterinarians in the early 1930s. Physicians discovered them in the 1960s while studying “the common cold” but assumed that they were merely nuisance microbes. Medical researchers lost interest in them until the shocking appearance of SARS. Gain-of-function research of pandemic potential pathogens, such as SARS, and the possibility that it might have led to Covid-19, raises concerns about the ethics and risks of this type of research. 

Dr. Laura H. Kahn is a physician, policy researcher, educator, and author. For almost 20 years, she was a research scholar in the Program on Science and Global Security at Princeton's School of Public and International Affairs, Princeton University. Her education and training encompass nursing, medicine, public health, and public policy.

A native of California, Dr. Kahn holds a bachelor's degree in nursing from UC Los Angeles, a doctorate in medicine from the Mt. Sinai School of Medicine, a master's degree in public health from Columbia University and a master's degree in public policy from Princeton University. Dr. Kahn is a fellow of the American College of Physicians. In 2007, the New Jersey Chapter of the American College of Physicians awarded her with their highest honor, the Laureate Award. In 2014, the American Association of Public Health Physicians awarded her with a Presidential Award for Meritorious Service, and in 2016, the American Veterinary Epidemiology Society (AVES) awarded her with their highest honor for her work in One Health: the K.F. Meyer-James H. Steele Gold Head Cane Award.

January 10, 2 P.M.
Connie Morella Library
7400 Arlington Road
Bethesda, MD [map] [directions]
(Bethesda Metro station)

FREE admission – Everyone welcome, members and non-members
livestreamed: https://youtube.com/live/Oebw-td-I3c?feature=share

Saturday, December 6, 2025

Nate Pedersen on his book 
Pseudoscience:
An Amusing History of Crackpot Ideas and Why We Love Them

image of book: Pseudoscience
From the easily disproved to the wildly speculative, to straight-up hucksterism, Pseudoscience is a romp through much more than bad science—it’s a light-hearted look into why we insist on believing in things such as Big Foot, astrology, and the existence of aliens. Did you know, for example, that you can tell a person’s future by touching their butt? Rumpology. It’s a thing, but not really. Or that Stanley Kubrick made a fake moon landing film for the US government? Except he didn’t. Or that spontaneous human combustion is real? It ain’t, but it can be explained scientifically.   

Pseudoscience is a wild mix of history, pop culture, and good old-fashioned science–that not just entertains, but sheds a little light on why we all love to believe in things we know aren't true. 

 Nate Pedersen is an award-winning nonfiction writer and anthologist living in southern Minnesota.  He is the co-author of Quackery: A Brief History of the Worst Ways to Cure Everything, Patient Zero: A Curious History of the World's Worst Diseases, and his most recent book Pseudoscience: An Amusing History of Crackpot Ideas and Why We Love Them, all from Workman / Hachette.  His website is http://natepedersen.com

Saturday, December 6, 1:30 p.m.
ONLINE ONLY:

https://www.youtube.com/live/6RNDeu0SfG8




Coming January 10, 2026:

"Everything you wanted to know about coronaviruses but were afraid to ask."
Laura H. Kahn MD, MPH, MPP, author of One Health and the Politics of COVID-19

Saturday, November 15, 2025

MESMERIZED

An Immersive Experiment in Science & Magic

Mesmerized

Saturday, November 15 at 8 p.m.

Capital Hilton, 1001 16th Street Northwest, Washington, DC 20036


The field of experimental psychology arose during a time steeped in wonder and mystery. Spiritualism gained widespread influence, proposing that death was not an end but a transition. Mesmerists claimed to heal all ailments through the laying-on of hands. Early psychologists did not merely react to these remarkable phenomena—they incorporated them into their investigations of the human mind.
In this performance, cognitive scientist & magician Anthony Barnhart, alongside occult aficionado Joe Diamond, explore these mid-19th century curiosities through interactive experiments, psychological illusions, and compelling storytelling.

Teaser video: https://www.youtube.com/watch?v=t44v_BFYH4U

Tickets: 
https://tinyurl.com/MESMERizedDC

Use code Skeptic2025 at checkout for the NCAS member (and guest) discount.


Coming soon: SkepTour 2025 and MESMERIZED

"I Ain't Afraid of No Ghost" SkepTour 2025

Wednesday, October 22 (rain date October 23) at 7 p.m.


  • What is the origin of the "Demon Cat of DC?"
  • Where in Washington did Houdini hang upside-down, while escaping from a straitjacket?
  • Where was the skeleton of a prominent Bigfoot researcher–and his dog–on display?

The National Capital Area Skeptics will answer these questions and more on our (approximately) 2-hour stroll to a dozen or so spooky and sciencey spots in the heart of Washington, DC.

Start: 7 P.M., Andrew W Mellon "astrology" Fountain, Constitution & Pennsylvania Ave.
Closest Metro: Archives-Navy Memorial-Penn Quarter (Yellow/Green Lines)

Finish: Lafayette Square.
Closest Metro: Farragut North (Red Line)

Tickets for the general public are $10.00, but NCAS members and friends can use the code DCSKEPTOUR2025 to get tickets for $5.00!

NOTE: THIS TOUR IS LIMITED TO 20 PARTICIPANTS

Tickets may be purchased here:
https://www.eventbrite.com/e/i-aint-afraid-of-no-ghost-skeptour-2025-tickets-1680687554719


MESMERIZED

An Immersive Experiment in Science & Magic


Saturday, November 15 at 8 p.m.

Capital Hilton, 1001 16th Street Northwest, Washington, DC 20036


The field of experimental psychology arose during a time steeped in wonder and mystery. Spiritualism gained widespread influence, proposing that death was not an end but a transition. Mesmerists claimed to heal all ailments through the laying-on of hands. Early psychologists did not merely react to these remarkable phenomena—they incorporated them into their investigations of the human mind.
In this performance, cognitive scientist & magician Anthony Barnhart, alongside occult aficionado Joe Diamond, explore these mid-19th century curiosities through interactive experiments, psychological illusions, and compelling storytelling.

Teaser video: https://www.youtube.com/watch?v=t44v_BFYH4U

Tickets: 
https://www.eventbrite.com/e/mesmerized-an-immersive-experiment-in-science-magic-tickets-1670758847689 

Use code Skeptic2025 at checkout for the NCAS member (and guest) discount.