Science

Dear friends, Join us for a gentle hike if you enjoy both walking in the forest and meditating. We’ll take a 2-hour walk in Grunewald and have a meditation practice along the way. The practice is suitable for everyone, regardless of meditation experience. It’s a beautiful way to connect with nature, calm the mind, experience serenity, and have a good time with others. 📍**Meeting point:** [https://maps.app.goo.gl/gkvVTaZisA73RsRn7?g_st=ic](https://maps.app.goo.gl/gkvVTaZisA73RsRn7?g_st=ic) Please use this exact location - it’s a parking area next to Teufelsseestraße 21, 14055 Berlin. **🗓 When: Monday, 6 April** **10:00 - 13:00** Please arrive before 10:00. We will wait a maximum of 10 minutes for latecomers. The hike will take approximately 2 hours, and the meditation practice will last about 30 minutes. We will return to the starting point by 13:00. **🎟️Participation is donation based:** Feel free to donate any amount you like. **What to bring:** \- Wear comfortable shoes and clothes; please check the weather beforehand \- A water bottle \(water or tea\, as you prefer\) \- If you’d like\, bring something to sit on \(a small pillow\, cloth\, or anything comfortable for sitting in nature\) We love nature and meditation - and maybe you will too! Oneness Berlin Jazgul, Florian & Carla

Easter Monday carries a different kind of energy — somewhere between a long weekend, a fresh start, and the feeling that spring is finally here. This Social Butterfly Club Meetup brings that energy into a relaxed Monday evening. A space to connect, share conversations, and start the week with a bit more lightness and curiosity. 🌷 There might be a few small Easter surprises hidden around — nothing too serious, just a playful excuse to look around, smile, and maybe start a conversation with someone new. 🐣 Whether you’ve spent the weekend with people, by yourself, or somewhere in between — this is a chance to step back into the city and connect. ✨ Suggested Ice Breaker Question: “What has been a highlight of your long weekend?” Orga This meetup is donation based. Your contribution helps keep this community alive and is highly appreciated. You can either contribute in cash or via Buy me a Coffee: [https://buymeacoffee.com/butterflyradar](https://buymeacoffee.com/butterflyradar) Questions? Check our Meetup-FAQs: [https://socialbutterfly.berlin/meetup-faq/](https://socialbutterfly.berlin/meetup-faq/) Meet your host I’m Julia — a Berlin local who loves bringing people together. My path went from growing up in a dance school to studying philosophy to working in IT support, and somehow all of that led me here: hosting meetups and creating spaces where people can show up, relax, and connect. Insta [https://www.instagram.com/juwaberlin/](https://www.instagram.com/juwaberlin/) LinkedIn [https://www.linkedin.com/in/julia-waehnert/](https://www.linkedin.com/in/julia-waehnert/) About The Social Butterfly Club 🦋 is a Berlin-based community that has been bringing people together for over three years. Each gathering is part of a larger framework designed to help friendships grow through shared experiences in the city — with a long-term vision of turning Berlin itself into a shared, playful experience. Love the vibe? There’s a whole community waiting for you. 🦋 Join the Social Butterfly Club and experience Berlin together Join our Telegram Group: [https://t.me/+OnASVWZ7emhjYzEy](https://t.me/+OnASVWZ7emhjYzEy) Subscribe to our weekly newsletter: [https://socialbutterflyradar.substack.com/](https://socialbutterflyradar.substack.com/) 🌸 Support us with a monthly membership: Become a Founding Flutterer for 14.95€/month and help the Social Butterfly Club grow. Your support keeps the project alive and helps us continue creating spaces where people in Berlin can meet and connect. [https://steady.page/en/social-butterfly-club/](https://steady.page/en/social-butterfly-club/)

Join this outdoor activity and have some nice company on Eastermonday. We will walk alongside the small river Wuhle starting at the station Wuhletal and taking the south part of the Wuhletal-hiking trail. This walk has 10 km and takes around 2/2,5 hours and ends at the station Köpenick (all AB-area). There is no possibility for purchasing food or drinks on the way. Additionally we can have coffee after in one of the cafés in Altstadt Köpenick. I kindly ask for a contribution of 2€ for organizing this event and paying meetup fees. **meeting point**: S+U Wuhletal (S5/U5) at the platform

Come along for an evening of board games, good conversations, and great company with like-minded people! We’re meeting at **RuDi Nachbarschaftshaus**, a colorful and inclusive neighborhood community space. We provide games – all you need to bring is yourself. If you have any games you want to share, feel free to bring them along as well! You’re also welcome to bring your own vegan food and drinks to enjoy during the evening. **Where**: RuDi Nachbarschaftshaus, Modersohnstraße 55, 10245 Berlin **When**: 6 April, from 18:30 to 00:00 **Contribution**: 2 € event fee (non-refundable). Half of it covers the cost of the event space. The other half helps cover the Meetup fee and small costs; any extra is donated to animal rights NGOs. You can either pay with paypal or cash the day of the event. This event is for vegans or vegan-curious. If you are not vegan (even vegetarian), and you are attending this event, please **only bring vegan food/drinks** to respect the mission of the group and other members. This is a casual event, so turning up late or with an extra friend is all fine. If you can’t come after RSVPing, please update your RSVP so others on the waiting list can join. Please note that we have a zero-tolerance policy for hate, discrimination, or disrespect of any kind. This space is meant to be safe, inclusive, and welcoming for vegans of all kinds.

🇬🇧 Here's Japanese Language Kaiwa! #7 Thanks for coming last time. We were a big group! **Let’s reconfirm Cafe Buchhandlung.** As usual we start at 7 pm! New joiner? Don't be shy and come improve your beginner Japanese skills, or keep your high level skills in practice, by meeting new people. がんばりましょう！ Or come help a Japanese speaker with their English/German. **Please order at least 1 drink (the place is cash only).** Organised by Mauro and Yumi ーーーー 🇯🇵 こちらは日本語会話会 Kaiwa! #7 です 前回はご参加ありがとうございました。とても大人数でしたね！ **今回もCafe Buchhandlungで開催予定です。** いつも通り、19時スタートです！ 初めての方も大歓迎です。恥ずかしがらずに参加して、日本語初心者の方はスキルアップを、上級者の方はレベル維持のために、新しい人と交流しましょう。がんばりましょう！ また、日本人の方の英語やドイツ語の練習を手伝いたい方もぜひご参加ください。 **ドリンクを最低1杯ご注文ください（現金のみです）。** 主催：Mauro と ユミ

**Ice bathing together at Treptower Park and surroundings – regular & reliable ☀️❄️** Exact time and date - we schedule together! Meetup once a week! Hello everyone, I’m looking for a like-minded person (or a small group) who would like to go ice bathing together once a week on a regular basis – preferably at Treptower Park and the surrounding area. The day and time are flexible for me; what matters most to me is reliability and consistency. I’ve been ice bathing for several years and value this practice greatly: as an energising time in nature, as a shared act of overcoming oneself, and as something that is noticeably beneficial for both body and mind. For me, it has positive effects on health, sleep, and recovery – and it’s a wonderful way to start the next week feeling light, uplifted, and content. After four years, my previous ice-bathing partner is unfortunately no longer able to join, so I’m now happy to meet new people. I’m open and enjoy coordinating flexibly. If you already have experience, or if you’re curious and would like to try it out in a committed way, feel free to get in touch. I’m looking forward to the exchange and to arriving together in the cold water. Warm regards, Till

Join us for a writing on the train trip to Lutherstadt Wittenberg (1hr 27m). Leave Berlin Hauptbahnhof at 10:40am, Platform 2 - B Arrive Lutherstadt Wittenberg Hbf at 12:07pm, Pl. 4 Once there we'll walk for a bit, find a cafe. We'll return on the train at 14:52 to Berlin, arriving at 16:19. Feel free to also read on the train.

Welcome to the mystical world of Tarot. The Tarot has been used since the 16th century as a tool for divination & inner reflection. Yet very few understand the mechanism behind how it works, and how to apply it toward uncovering hidden aspects of the psyche. Through a mix of intellectual discussion and practical exercises, we will dive into the connection between Tarot, Jungian psychology, and our inner worlds- leaving participants with a greater understanding of how to use Tarot as a tool for inner reflection and guidance in their personal lives. Door open at 6:30, event starts at 7pm. We will have light refreshments, wine, beer, and non-alcoholic beverages available for purchase. Tickets are donation based and recommended for 10 € via pre-registration ([link here](https://rausgegangen.de/en/events/mystery-salon-at-lilium-tarot-jung-the-shadow-0/)) or 15 € at the door. We recommend bringing a notebook or journal, and optionally, a deck you'd like to practice with. Whether you are a novice or expert- all levels are welcome- perhaps we can learn something from you? This salon is part of a special event series taking place in the beautiful and intimate setting of Lilium (Pfuelstrasse 5). Every Wednesday in April we gather for intellectual discussion around a range of topics at the intersection of spirituality, science, and self-improvement. The full program: April 1- [Full Moon Women's Circle](https://rausgegangen.de/en/events/pink-full-moon-womens-circle-at-lilium-0/) April 8- [Tarot, Jung & the Shadow](https://rausgegangen.de/en/events/mystery-salon-at-lilium-tarot-jung-the-shadow-0/) April 15- Dreamwork: Uncovering the hidden meanings of dreams April 22- Earth, Elements & Sacred Nature April 28th (Tuesday)- Special Edition Ecstatic Dance Event We can't wait to welcome you there! For questions please reach out to the organizer cheryl@risingtide.store

**BitDevs Bitcoin Socratic Seminar Berlin @ c-base Raumstation** Join us for our monthly interactive **[Bitcoin Socratic Seminar](https://bitdevs.berlin)** in Berlin! We’ll start with pizza and beer (sponsored by [Ordimint.com](https://ordimint.com)), followed by deep-dive discussions on the most interesting *technical* developments in Bitcoin from the past month. Participation by everyone is highly encouraged! Our goal is to foster lively discussion, knowledge sharing, and debate. In the weeks leading up to the event, participants gather topics such as: * New research papers * New BIPs and BOLTs * Network statistics * Technical blog posts * Mailing list and Delving Bitcoin threads * Pull requests and updates from key repos (Bitcoin Core, LND, Core Lightning, Eclair, BDK, rust-bitcoin, LDK, Electrum, …) Each topic is briefly introduced by our moderators and then discussed before moving on. The full list of links will be published at [bitdevs.berlin](https://bitdevs.berlin) 1–2 days before the event — please review them in advance to get the most out of the discussion. **Important details:** * This event is highly technical — best suited for those with a solid grasp of Bitcoin internals. Curious newcomers are always very welcome, but expect in-depth conversations (see the former topics at [bitdevs.berlin](https://bitdevs.berlin)). * Chatham House Rule applies: you may share what was discussed, but not who said it. No livestream, no photos, no recordings. * The evening begins with food and networking; people often stay after the seminar to keep talking. **Co-hosted by:** * [Felix](https://x.com/FelixWeis) * [Freerk](https://x.com/freerko) * [Fabian](https://x.com/fjahr) For background on the idea of BitDevs Socratic Seminars, see [this article](https://bitcoinmagazine.com/articles/op-ed-want-to-learn-about-bitcoin-try-a-local-socratic-seminar).

🚀 Workshops: The Human-Digital Synthesis **Kultur\-Technik 2026 \| Women in Big Data Berlin** AI is no longer a future concept—it is already reshaping how we work, create, and make decisions. The real question is: **how do we use it intelligently?** *Kultur-Technik 2026:* *The Human–Digital Synthesis* draws from the European idea that technology is an extension of human culture. In this interactive session, we bring together the Women in Big Data Berlin community to explore how humans and AI will collaborate, build, and evolve together. This is not a passive event— it’s a space to **learn, discuss, and create together.** The event is hosted by **Ojin AixHaus.** Ojin AixHaus is the new, collaborative community space in Berlin Mitte, where scientists, machine learning engineers, founders, creators, and AI enthusiasts come together to build and learn about the future of AI. Ojin AixHaus is free to join, open for startups in residency applications and is currently curating their 2026 events calendar. If you have a burning idea for an event, meetup or hackathon - bring your fire, they bring the space! **💡 Event Details 💡** **1\. Choose and Participate Your Workshop \(60 mins\)** Participants will get to choose and join one of two parallel tracks onsite, and co-create a “chapter” for the final showcase. 🧠 **TECH TRACK: Collective Intelligence & AI in Companies** Facilitator: Dr. Katarzyna Stoltmann Co\-Founder\, Women in Big Data Berlin \| Head of Data Science & AI How do companies truly get the best out of AI? The answer: **collective intelligence**. This session explores: * What collective intelligence means in practice * Which tasks and roles will evolve with AI * Whether AI replaces work—or creates new opportunities ✍🏼 Hands-on focus: Designing end-to-end AI solutions at scale—thinking through how humans and AI systems collaborate to deliver impact for millions of users. 🖼️ Output: A conceptual demonstration of a **“context-aware agent architecture”** 🌟 **IDENTITY TRACK: Visibility & Personal Branding in the Age of AI** Facilitator: Angeley Mullins Founder & CEO, Aetheris Ventures In a world where content and ideas can be generated at scale, how do you stay **visible, credible, and distinctive**? This session explores: * How to position your *human voice* in an AI-driven landscape * What defines authenticity and value in 2026 * How to use AI as a co-creator, not a replacement ✍🏼 Hands-on focus: Define your personal narrative, identify your unique “signal,” and build a strategic approach to visibility through guided exercises and peer exchange. 🖼️ Output: A **“Visible Self Prototype”**—your personal positioning, key content angles, and a simple plan to build credibility and presence in an AI-shaped world **2\. Grand Finale: The 2026 Showcase \(45 mins\)** We come together to share insights from each group: * Tech track presents the “Brain” (AI Agent concept) * Capabilities track presents the “Voice” (Personal Brand & Visibility Strategy in the AI era) We will have networking afterwards where you can continue sharing your ideas! 🗓 **Date: 9 April 2026** **⏰ Time: 18:00 – 21:30** **📍 Location: Ojin AixHaus \| Chausseestraße 36\, 10115 Berlin** Why do we need these workshops? Because AI is moving so fast! - and so should we. Join us to: * Understand AI beyond the hype * Learn how to use it strategically and responsibly * Connect with a community shaping the future 👉 **Choose your track. Join the conversation. Build what’s next. We look forward to seeing you next week!** Find out more here: [Ojin AixHaus Community ](https://ojin.ai/community) Follow Ojin AixHaus on socials: [Instagram](https://www.instagram.com/ojin.ai/#) [Linkedin](https://www.linkedin.com/showcase/ojin-aixhaus/) [X](https://x.com/Ojin_AI)

An inspiring, high-energy meeting of public speaking, connection, and personal growth in the heart of Berlin. **Mercury Toastmasters Berlin** invites you to our weekly meeting at our new home at **Das Center, Potsdamer Platz**, in the stunning **Historic Imperial Breakfast Hall**. *Experience the **power of prepared speeches** loaded with bold ideas, participate in our **dynamic Impromptu Session**, and **gain valuable insights** during our feedback segment.* *Leave with practical tools, fresh ideas, and renewed inspiration.* *Whether you want to speak up at work, boost your presence, or just meet inspiring people, you’ll feel at home at Mercury Toastmasters Berlin.* *** **[What to Expect:](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/)** ✨ A supportive space to speak, grow, and connect 🎤 Engaging prepared speeches ⚡ Fun, fast-paced impromptu speaking challenges 💬 Feedback session you can actually use 🌍 A friendly, international crowd (around 25–30 people) **Schedule** (times may vary) ⏰ 19:15 - Doors open & networking 🎙️ 19:30 - Prepared Speeches 🏓 20:35 - Impromptu Session (Guest welcome to join) ↩️ 21:00 - Constructive feedback 💬 21:30 - Food, drinks & relaxed socializing **No experience needed.** ***Come curious. Leave energized.*** *** **🤙 [Hear it from our members:](https://maps.app.goo.gl/eRtvR9DRNqU9WZQn7)** *“You can sharpen your public speaking skills and gain tons of confidence, while having fun and making new friends. Mercury is well-structured, fun, and affordable.”* — *Therese Pitt* *“Mercury gave me a safe place to speak, create, and grow. I love the multicultural vibe and supportive community. It’s the best place to learn and have fun.”* — *Krisztina Linka* *** **[Did You Know?](https://mercurytoastmasters.de/about-mercury-toastmasters-berlin/)** Toastmasters is where people go to get better at speaking—and grow into confident communicators and leaders. Today [Toastmasters ](https://mercurytoastmasters.de/about-mercury-toastmasters-berlin/)has 350,000+ members across 16,000 clubs in 143 countries. And [Mercury](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/) is one of the best places to experience it. So bring your curiosity, your energy—and just be yourself. Whether you’re just starting or ready to level up, there’s a place for you here. *** **[Wondering what you get as a member?](https://mercurytoastmasters.de/membership-mercury-toastmasters-berlin/)** Think expert feedback, real-world speaking practice, and a supportive crew that’s got your back. [See you Wednesday night! 🎉](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/)

**Speed Friending Event** Are you ready to meet new people and make new friends? Join us for our Speed Friending event! This is a fantastic opportunity to connect with others in a fun and relaxed environment. **Introduction:** We'll start with a brief introduction to get everyone comfortable. **Speed Friending Rounds:** You will have a few minutes to chat with each participant. This is your chance to meet as many new people as possible! You can ask your own questions or use the provided card questions to help spark conversations. **What to Bring:** \- A positive attitude and willingness to meet new people\. \- Water bottle \(optional\)\. \- If you have a blanket to sit on\, feel free to bring it along for comfort\. **Sharing Contact Information:** If you meet someone you would like to stay in touch with, you can write down their names and send it to me via chat. You are welcome to share your Instagram, WhatsApp, email, or any other contact details you prefer. **Additional Information:** The exact location within the park will be shared in the event chat and comments on the day of the event to ensure we find an empty spot. We're also hoping for a gender-balanced group to keep the atmosphere welcoming and comfortable for everyone. Looking forward to seeing you there! :) **Please note: This is not a speed dating event.** The goal is to make new connections and friendships in a friendly, inclusive environment.

Meet up and join us this Saturday! Whether you're a long-time resident or just travelling through, come and meet new people to have fun, make new friends and enjoy your Saturday evening in a safe and welcoming environment at one of Berlins fantastic bars (and then there's always people who want to go to a club afterwards). This week we're heading for the first time to the fantabulous **Tabula Rasa** (see link to location). We always have several organisers there (male and female), so come say hello to us! We care to make sure that everyones enjoys themselves and we have **no tolerance for bad behaviour or creepiness.** **Follow us on Insta:** @siphappens.berlin **Join us on Telegram:** t.me/siphappens_berlin **👉 Other important notes:** \- 🍸 The locations we visit are bars and clubs\, they are businesses and we are able to keep these events free ONLY if people buy drinks\. Please respect the locations and the event by making purchases \- 🦹‍♂️ Remember to keep an eye on your belongings and prioritize your own well\-being\. We are not responsible for any lost items or personal issues\. \- 📷 By attending our events\, you consent to being photographed or filmed\. Photos and videos taken during the events may be shared on our social media\. If you do not wish to appear in the photos or if you appear in a photo that we post that you would like removed\, please send us a private message as soon as possible on Instagram \(@siphappens\.berlin\)

This meeting will be a discussion of the book "the Science of Aliens" by Mark Brake

Let’s try this popular Italian restaurant in Reynoldsburg. This is the menu: https://scaliristorante.com/#4e468054-0235-43e2-81c2-44e061341e9e

Bienvenue! Columbus French Conversation group invites you to our Saturday morning French conversation club. Expect a casual and welcoming atmosphere in which to learn french! I will bring my laptop so we can look up new vocabulary as needed! The venue is a beautiful French restaurant so you can really get into the zone :)

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

The April Ohio North Database Training user group meeting will be held on **April 7th, 2026 at 5:00PM**. This will be a **HYBRID** event and we will be joined online by **Kayla Boor**. You're welcome to come meet in-person at our meeting location, the offices of Improving at **[6000 Freedom Square Dr,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Unit 110,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Independence, OH 44131](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** [Teams Link ](https://teams.microsoft.com/meet/22562814501129?p=w1cSxeUXFTVeIpZiMw)if anyone needs it after RSVP-ing for in person. If you would like to subscribe to our email list outside of Meetup, we have changed platforms recently and you will need to register [here in Kit ](https://ohio-north-data-training.kit.com/b8f036f615)instead to receive emails. Agenda: **5:00 PM EST**: Online and in-person meeting begins with a social hour. This is an unstructured hour where you can join us to catch up and meet other group members before the session starts. There will be food brought in for in-person attendees. **6:00 PM EST**: Updates and announcements, followed by our feature presentation. See below for presentation details. **7:30 PM EST**: Optionally after the main presentations, the in-person crowd may go out for snacks and drinks at a local establishment. We hope to see you there! Session Abstract **Accidental friends: How a DBA and an SRE worked together to optimize the system.** This session is focused on how to communicate effectively between teams to improve alert fatigue, performance, and observability. \*\*NEW SPEAKER \*Please note, that we will be using Microsoft Teams for the online portion of this meeting. You may want to join a few minutes early to ensure you do not have any issues. If you are attending in person, there are large TVs at the office, and you do not need to bring a laptop or use Teams.