Astrophysics

[Profs and Pints DC](https://www.profsandpints.com/washingtondc) presents: **“Doom and Dinosaurs,”** a look at how mass extinctions shaped the dinosaurs and what research on these events tells us about Earth life’s long-term prospects, with Ian Wilenzik, paleontologist and visiting assistant professor of biology at George Washington University. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/dc-doom-and-dinosaurs](https://events.ticketleap.com/tickets/profsandpints/dc-doom-and-dinosaurs) .] Pity the poor dinosaurs. They lacked both scientific research to help deal with potential environmental catastrophes and places where they could have a beer and discuss it. You, on the other hand, have the opportunity to come to Profs and Pints to hear a fascinating talk on the impact of mass extinctions on dinosaur evolution and what research on dinosaurs tells us about biodiversity and Earth’s current biodiversity crisis. Dr. Ian Wilenzik, who has studied and taught courses on dinosaur evolution, population spread, and extinction, will leave you with a greater appreciation of the resilience of life on earth and how we’re both the product and source of biologically catastrophic events. Many of us are familiar with how a big meteor impact about 66 million years ago wiped out the Earth’s dinosaur population, leaving us only with their feathered descendants, birds. Less well known is how the Earth actually has undergone five periods of mass extinction that wiped out nearly all life, and how dinosaurs arose from one and endured another—both caused by volcanic activity—before meeting their match in the third. To ground his discussion, Dr. Wilenzik will talk about how we study mass extinctions by looking for geologic evidence of volcanic activity, meteoric blasts, and other catastrophic activity and of gaps in the fossil record after them. He’ll also discuss what makes a dinosaur a dinosaur, describing their distinct anatomical features. He’ll talk about how they and other forms of life evolved over long periods of time and were affected by extinction events. We’ll look at how the meteor-caused mass extinction that wiped out dinosaurs at the end of the Cretaceous paved the way for the rise of mammals and the emergence of primates, and, eventually, us. Looking ahead to future mass extinctions and what might survive them, we’ll talk about how that plant you forget to water might have the last laugh, as well as why crocodiles might be around a while. (Doors: $17, or $15 with a student ID. Listed time is for doors. The talk starts 30 minutes later.) Image: A *Triceratops* mounted skeleton at the Los Angeles Museum of Natural History (Photo by Allie Caulfield / Wikimedia Commons).

World Learning Toastmasters Club meetings are held every 2nd and 4th Wednesday from 12:00 to 1:00 p.m. We are a fun loving group of professionals looking to develop our public speaking and leadership skills. Take a break from your work and come join us for a fun afternoon. All guests are welcome! Closest Metro station: Either McPherson Square (white house exit) or Farragut North. For more information about the club, please visit http://worldlearningtoastmasters.toastmastersclubs.org/

Curious about what it’s like to work in tech? Join us for a “day in the life” session with AWS engineers and learn about their roles, daily work, and career journeys in cloud computing. Stick around after for a networking session with professionals and students ask questions, make connections, and explore future opportunities in tech.

Toast of Oakton is currently meeting online and in person at Oakton Library. We meet after library hours. Please use the entrance on the side of the building. We welcome you to join us on the 2nd and 4th Wednesdays of the month. For questions, further information or to contact us visit our website - https://too.toastmastersclubs.org/ Meet and greet - 6:45pm Meeting begins - 7:00pm See Online Meeting Announcement for Zoom information after RSVP.

**Zephyrus Bikes is linking up with District Cycling Collective to bring back that Wednesday Night Ryde energy. This weekly roll is led by Jeff Walden, the man behind Zephyrus and a true force on two wheels.** **We’re meeting in Falls Church and taking it to the streets. This ride ain’t for the brand new riders, but if you’ve got some miles under your belt and you’re ready to level up, pull up. It’s all love, no drop, and plenty of chances to get stronger with the crew.** **Location: Giant Food parking lot** **7235 Arlington Blvd, Falls Church, VA** **Meet time: 5:30 PM** **Wheels up: 6 PM sharp** **Pace: Around 18 mph — steady but not wild** **Vibe: No drop, no egos. Just good energy, solid legs, and some climbing.** **Note: No SAG. You ride at your own risk.** **This is where the streets meet the grind. Come correct, bring your legs, and let’s ride.** 
**
Route: https://ridewithgps.com/routes/36205543**

Join Social Sips & Bites for our Wednesday Happy Hour. Great drinks, easy conversation, new faces, familiar faces, and that signature SSB energy that turns a simple night out into something memorable. https://m.ruthschris.com/home/tysons-corner/7341

Every Sunday afternoon before church, one of the Covenant Life Church prophetess' hosts a prophetic training class that activates participants in the Gifts of the Holy Spirit. During this class, participants will be provided opportunity to be taught how to use the Gifts of the Holy Spirit and will have opportunity to ask questions and talk with someone who has been used in the Gifts during ministry. Teaching is provided on the gifts with emphasis on the Gift of the Prophecy. A combination of lecture and experiential learning is employed to teach, guide and instruct the participants. Everyone is welcome, all classes are free. Childcare is not provided.

**☕ Code & Coffee \| Black Code Collective** Pull up, plug in, and enjoy some good company. Join us for a chill Sunday coworking session — bring your laptop and your current project (or no project at all). All skill levels welcome. **Free to attend. Coffee & treats provided. Just show up.** 📅 **Sunday, April 26** 🕙 **10:30 AM – 12:30 PM** 📍 **Falls Church, VA** Please note that we would be located on the 5th floor with the listed address below. 105 W Broad St, Suite #410 · Falls Church, VA 22046

Shilohites Toastmasters meets every 2nd and 4th Sundays. Meetings start at 4:00 pm, and last one hour. We are a community club open to all. Parking is free. We focus on personal goals for professional development.

Join PSW Science® on April 24 at 8 PM as we welcome Harris Lewin, Research Professor with Julie Ann Wrigley Global Futures Laboratory & Arizona State University. During the question and answer period, in-person attendees and live stream viewers may ask the speaker questions, and in-person attendees may also engage with the speaker during the post-lecture reception. Refreshments are served. For more information on this meeting, please visit: https://pswscience.org/meeting/2535 The meeting will be held in the John Wesley Powell Auditorium, adjacent to the Cosmos Club. The Powell Auditorium is located at 2170 Florida Avenue, NW Washington, DC 20008. Use of the Cosmos Club is restricted to the Powell Auditorium, the entryway to the auditorium, and the restrooms immediately outside the auditorium. Please note there is no onsite parking available. PSW Science, founded in 1871, is one of the oldest scientific societies in Washington D.C. Now, over 150 years later, we celebrate the Society's rich history and contributions to scientific discovery and cross-disciplinary collaboration. For information on how to become a member of PSW Science and membership benefits, please visit https://pswscience.org/join/

[Profs and Pints Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“Facing Fascism,”** on the history, hallmarks, and lingering power of a deadly ideology, with Kevin Matthews, professor of history at George Mason University and teacher of courses on early 20th century European history. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/nv-facing-fascism](https://events.ticketleap.com/tickets/profsandpints/nv-facing-fascism) .] Few political movements have aroused as much anger and fear as fascism. But despite its legacy of violence, persecution, and genocide, fascism continues to hold a strange attraction to many. Join historian Kevin Matthews for an in-depth look at an ideology that brought death to millions in Europe and yet continues to deeply influence our politics and culture. Dr. Matthews will start by discussing how the ideology of fascism arose in the aftermath of the First World War and took hold in Europe in the 1920s and 1930s. To give you a better grasp of what exactly fascism is, he’ll discuss its central themes: Anti-democracy. Extreme nationalism and anti-communism. The use, or threat, of violence in politics. Rejection of established values such as scientific objectivity. Denial of equal rights, especially for women. The assertion of power where a power vacuum exists. We’ll examine the rise and fall of two notorious fascist dictators, Adolf Hitler of Germany and Benito Mussolini of Italy. For a time it was believed that fascism died in the ashes of the Second World War, but it clearly didn’t, and we’ll look at where it remains a political force today. Finally, we’ll examine how fascism continues to permeate popular culture in ways that trivialize it, popping up in music from punk to Madonna, with its latent eroticism making it the subject of films such as *The Night Porter.* Having been called “the most self-consciously visual of all political forms,” it enlisted fashion leaders to produce uniforms and continues today to inspire a look known as “Nazi chic.” Dr. Matthews previously has given fantastic Profs and Pints talks on Ireland’s fight for independence and on World War II German submarine attacks off our coasts. He’s sure to leave you with a much better understanding of fascism and a recognition that is has hardly gone away. (Doors: $17, or $15 with a student ID. Listed time is for doors. Talk starts 30 minutes later.) Image: Benito Mussolini and Adolf Hitler during Mussolini's 1940 visit in Munich (photographer unknown / public domain).

• What we'll do On https://blackecon101.podbean.com/ Thursdays at 6 pm. discussing the economy....

Let’s meet and share our thoughts about Carson McCullers’ novella, The Ballad of The Sad Café.

## Escape the Office: Your Remote Career Takes Off Here Imagine the possibilities: Ditch the daily commute, design your ideal lifestyle, and work from anywhere. This Remote Ready Bootcamp delivers the skills and community you need to thrive as a location-independent pro. In just two weeks, learn to build a flexible, fulfilling remote career that lets you earn on your own terms, anywhere in the world. ### Ready to begin? [Secure Your Spot! 🚀](https://remoteready.io/product/RemoteReadyBootcamp?city=Columbus&groupurlname=circle-of-professionals-mastering-ai-income&startgmtdatetime=2026-04-24T22:00:00Z) --- **Is This For You?** This bootcamp is ideal if any of these describe you: * Yearning for remote work and ready to commit * Tired of being tied to a desk * Seeking ways to diversify your income streams * Craving location freedom in your professional life **What to Expect** Picture yourself in a vibrant cafe in Bali, effortlessly managing your work, then exploring ancient temples. Location-independent professionals make this their reality daily. This bootcamp empowers *you* to do the same. Over fourteen immersive days, you'll learn how to create multiple streams of income online and master the art of staying productive, no matter where you log in from. Our expert instructors have built successful remote careers across numerous countries. You're not just learning skills; you're joining a global movement. **Outcomes You Can Anticipate** * Developing diverse income opportunities to fund your lifestyle * Understanding crucial frameworks of successful location-free work * Gaining exclusive access to a network of remote-first entrepreneurs **Kickstart Your New Life** From the moment your enrol, you receive resources and support that prepare you for a remote-first trajectory. Don't wait! This course is high in demand, and seats dissapear quickly. [REGISTER NOW 🚀](https://remoteready.io/product/RemoteReadyBootcamp?city=Columbus&groupurlname=circle-of-professionals-mastering-ai-income&startgmtdatetime=2026-04-24T22:00:00Z) **Important Next Step:** Completing the registration form is essential to formally confirm your placement.

ASH is Atheists, Skeptics and Humanists of First Unitarian Universalists of Columbus Ohio TBD Snacks are usually available, and you are welcome to bringing something to share!

Join the CONNECTED Westerville Mastermind Group for a dynamic afternoon of B2B networking! This event is perfect for professionals looking to expand their business connections, share insights, and foster collaboration within the community. Whether you are a seasoned entrepreneur or just starting out, this event offers a valuable opportunity to exchange ideas, build relationships, and grow your network in a supportive environment. Connect with like-minded individuals, explore potential partnerships, and discover new opportunities for professional growth. Don't miss out on this chance to enhance your business network and take your career to the next level with CONNECTED Westerville Mastermind Group! We meet the 4th Monday of every month from 11am-1pm. Welcome and general networking from 11am - 11:30am with core meeting 11;30 - 12:30 and a final round of networking from 12:30 - 1pm.

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Bring your Raspberry Pi, Arduino, microcontroller, or any other electronic project and join fellow electronics makers for a night of creativity and collaboration! This session is open forum to share your current projects—whether complete or in progress, it’s all interesting! Whether you’re deep into embedded systems, exploring new ideas, or just getting started, you’ll find a welcoming space to collaborate, share, and get inspired. **New to electronics or curious about tinkering?** You’re absolutely welcome. If you’re a beginner and want to experiment, I’ll have a couple of starter kits available so you can try things out—whether that’s blinking your first LED, putting something on a display, or experimenting with simple sensors. No pressure and no experience required—just an interest in learning and building. While we continue to pursue a more permanent venue for this Meetup, we’ll be using public library facilities based on availability. This session will be at the Worthington Park Library in the Olentangy Meeting Room.

Walk for Children - 2026 Save Soil Walkathon in Columbus 🌍 Over 52% of the world soil is degraded and scientists warn we may have only a few decades of fertile soil left. As Sadhguru shares, soil is a living system—and when it degrades, our food, health, and future are at risk. https://www.youtube.com/watch?v=hyT-6qiubd0 🚶‍♂️🌎This Earth Day, Join the Walk for Children-2026 SaveSoil 5K Walkathon here in Columbus and help raise awareness about soil for the future of our children! Every step you take helps: ✔️ 1. Raise awareness in your communities about protecting and restoring soil. ✔️ 2. Supports sustainable food systems. ✔️ 3. Helps secure our children’s future. 📅 Date: April 26, 2026 📍 Location: Scioto Audubon Metro Park Check-in address 400 W Whittier St, Columbus, OH 43215 ⏰ Time: 8:30 a.m. check-in event starts at 9:30 a.m. 👉 Register here: https://www.eventbrite.com/e/walk-for-children-2026-save-soil-walkathon-in-columbus-registration-1986596534713?aff=oddtdtcreator 👉🏼Free and Open to All. Share this message and bring your neighbours, friends & family along to celebrate our planet! Let’s make it happen!