Sierra Club

**Can R tame the MCP chaos? Let's find out. 🤖** Two talks. Two live demos. One evening that might change how you think about MCP in R. Refreshments and networking from 18h00. **Agenda** \~\~\~\~\~\~\~\~\~\~\~\~ \* 16h30 – 16h45 \| Welcome and News \- Handre Williams & Luis de Sousa \* 16h45 – 17h20 \| Handre Williams: **R as a control layer for MCP workflows** MCP gives LLMs the ability to act. R gives you the ability to **control, validate, and orchestrate** those actions. This talk explores how R can sit in the loop as a **control layer** — managing tool calls, enforcing structure, and adding statistical sanity checks to MCP-driven workflows. Includes a **live demo**. \* 17h20 – 17h55 \| Luis de Sousa: **Turning R into an MCP server: exposing R as a tool for AI** What if your R code wasn’t just something you run... but something AI could call? This talk explores how to expose R as an **MCP server**, turning your scripts, models, and data pipelines into tools that LLMs can query and execute. You’ll see: \- How to **expose R functions safely as MCP tools** \- How AI can **call R to compute, query, and analyse** \- Where this breaks \- and where it’s genuinely useful Includes a **live demo**. \* 17h55 – 18h00 \| Wrap up\, questions & close \* 18h00 \| Refreshments & networking — continue the conversation in person **Details** \~\~\~\~\~\~\~\~\~\~\~\~ When: 12 May 2026 @ 16h30 to 18h00 (GMT+2) Where: Microsoft Campus in Bryanston, South Africa Location: https://goo.gl/maps/4ffcC3N6T7S2 Keen to speak at a future event? Submit your session abstracts at https://sessionize.com/johannesburg-r-user-group/ **Stay connected** \~\~\~\~\~\~\~\~\~\~\~\~ \* Website: https://www.rusergroup.co.za \* Meetup: https://www.meetup.com/joburg-r-users-group \* Twitter: https://twitter.com/JHBRUserGroup \* GitHub: https://github.com/rusergroupcoza \* WhatsApp: https://bit.ly/3CeDifS

**Can R tame the MCP chaos? Let's find out. 🤖** Two talks. Two live demos. One evening that might change how you think about MCP in R. Refreshments and networking from 18h00. **Agenda** \~\~\~\~\~\~\~\~\~\~\~\~ \* 16h30 – 16h45 \| Welcome and News \- Handre Williams & Luis de Sousa \* 16h45 – 17h20 \| Handre Williams: **R as a control layer for MCP workflows** MCP gives LLMs the ability to act. R gives you the ability to **control, validate, and orchestrate** those actions. This talk explores how R can sit in the loop as a **control layer** — managing tool calls, enforcing structure, and adding statistical sanity checks to MCP-driven workflows. Includes a **live demo**. \* 17h20 – 17h55 \| Luis de Sousa: **Turning R into an MCP server: exposing R as a tool for AI** What if your R code wasn’t just something you run... but something AI could call? This talk explores how to expose R as an **MCP server**, turning your scripts, models, and data pipelines into tools that LLMs can query and execute. You’ll see: \- How to **expose R functions safely as MCP tools** \- How AI can **call R to compute, query, and analyse** \- Where this breaks \- and where it’s genuinely useful Includes a **live demo**. \* 17h55 – 18h00 \| Wrap up\, questions & close \* 18h00 \| Refreshments & networking — continue the conversation in person **Details** \~\~\~\~\~\~\~\~\~\~\~\~ When: 12 May 2026 @ 16h30 to 18h00 (GMT+2) Where: Microsoft Campus in Bryanston, South Africa Location: https://goo.gl/maps/4ffcC3N6T7S2 Keen to speak at a future event? Submit your session abstracts at https://sessionize.com/johannesburg-r-user-group/ **Stay connected** \~\~\~\~\~\~\~\~\~\~\~\~ \* Website: https://www.rusergroup.co.za \* Meetup: https://www.meetup.com/joburg-r-users-group \* Twitter: https://twitter.com/JHBRUserGroup \* GitHub: https://github.com/rusergroupcoza \* WhatsApp: https://bit.ly/3CeDifS

**You're invited to join local Columbus animal advocates as we watch PETA's workshop together on cage-free campaigns. Free vegan pizza will be provided! After the workshop Q&A, we'll have a group discussion and brainstorm on future activism plans. Hope to see you there!** **Here are the details:** **WHEN: Tuesday, May 19, 2026 at 6pm EST** **WHERE: KTC Columbus** **If you cannot attend in person, you can still view the workshop virtually at https://www.facebook.com/events/1567122777711333** **Here's some background on the workshop:** **Please join us for an eye-opening online PETA Playbook discussion with PETA’s Associate Director of Vegan Campaigns, Amber Canavan, where we’ll ask the hard-hitting questions about the cage-free campaigns and their impact on both hens and vegan efforts.** **Whether you’re looking to strengthen your outreach or sharpen your messaging around the egg industry’s humane-washing tactics, this workshop will give you practical tools to help others understand what “cage-free” really means for hens and why the label is misleading.** **We’ll explore how to keep conversations respectful, fact-based, and focused on the animals’ reality while encouraging others to take effective action.** **Please join us for this important workshop to learn how you can cut through cage-free marketing and help animals.** **Come ready to learn, ask questions, and ignite your activism for animals!**

**Our May novel is: *The Quiet Librarian* by Allen Eskens** **This month’s book is set in the 20th century and mixes historical fiction with suspense and thriller elements. It also centers on women’s stories and relationships. The novel is 368 pages in print or 8 hours and 12 minutes on audiobook.** Hana Babic is a quiet, middle-aged librarian in Minnesota who wants nothing more than to be left alone. But when a detective arrives with the news that her best friend has been murdered, Hana knows that something evil has come for her, a dark remnant of the past she and her friend had shared. Thirty years before, Hana was someone else: Nura Divjak, a teenager growing up in the mountains of war-torn Bosnia—until Serbian soldiers arrived to slaughter her entire family before her eyes. The events of that day thrust Nura into the war, leading her to join a band of militia fighters, where she became not only a fierce warrior but a legend—the deadly Night Mora. But a shattering final act forced Nura to flee to the United States with a bounty on her head\*\*.\*\*

Interested? Contact Preston Moore k.preston.moore@gmail.com 614-300-5989 ———————————— Engaging in men’s work is the new way to forge friendships while being open-minded to personal growth. Many men experience healthier relationships, personally and professionally, by engaging in this work. Open Men’s Group is a container for men to share vulnerably without receiving judgment or feedback. We believe that emotionally mature, powerful, compassionate, and purpose-driven men will help heal some of society’s deepest wounds. We support the powerful brilliance of men and we are willing to look at, and take full responsibility for, the pain we are also capable of creating – and suffering. We care deeply about men, our families, communities, and the planet. Visit ManKind Project USA to discover more. https://mkpusa.org/

We meet at lunch each week and each meeting follows a fairly organized agenda. First all participants pass their business cards around. Then each member and guest is invited to give a one-minute overview of their company and what is a perfect referral for the week. We always have a 10 minute presentation from one of the members about their business in more detail. And finally we pass referrals. You're welcome to visit. Nobody is ever put on the spot. Bring plenty of cards!

**History** The history of [Blendon Woods Metro Park](https://www.metroparks.net/parks-and-trails/blendon-woods/) began long before its 1951 opening, rooted in a landscape of rugged ridges and deep ravines that made the land unsuitable for traditional farming. In 1945, a report proposing a metropolitan park system for Franklin County specifically highlighted these cliffs of Bedford Shale as some of the "wildest land in the vicinity". Following this recommendation, the recently formed park district purchased the first 229 acres in early 1949. Because the terrain was so uneven, developers had to cut a mile-and-a-half-long roadway through dense woods just to bring in heavy equipment. This initial preservation effort ensured that the mature second-growth hardwood forests remained largely untouched by the urban expansion spreading toward Westerville. Opening day arrived on Labor Day, September 3, 1951, marking Blendon Woods as the second park in the Columbus and Franklin County Metro Parks system. The final push to open was a frantic race; the State Highway Department only finished the primary gravel access road four days before the gates opened. Early staff members, consisting of just four full-time employees, had to hand-dig pit toilets and learn construction skills on the fly to build the first picnic shelters. Despite the dusty conditions and limited facilities, the park was an immediate success, drawing massive crowds from across Central Ohio. By the end of the 1950s, annual visitation had already climbed to over 190,000 people. As the surrounding suburbs grew in the 1960s, the park faced severe overcrowding that threatened its natural habitats. In response, Franklin County voters passed the first Metro Parks levy in 1960, providing the funds necessary for a decade of steady expansion. During this era, the park nearly doubled in size, growing from 264 acres to over 570 acres by 1968. Planners also addressed a critical water shortage by collaborating with the U.S. Soil and Conservation Service to build a lake in 1964. This body of water originally served as a temporary reservoir before its role shifted toward conservation and wildlife support. The 1970s marked a transition toward the specialized wildlife and educational focus for which the park is known today. In 1971, the Walden Waterfowl Refuge was established around the 11-acre Thoreau Lake, creating a sanctuary that remains restricted to provide a quiet habitat for migratory birds. A formal nature center was also developed during this period, expanding on the guided Sunday walks that had been a park staple since the early 1950s. The park’s famous "Monarch Mansion" also became a prominent fixture, starting a long tradition of raising and releasing thousands of monarch butterflies each September. These initiatives cemented the park’s reputation as a premier destination for birders and nature enthusiasts. In more recent decades, Blendon Woods has continued to modernize while maintaining its wilderness character. The 10-acre Natural Play Area was added in 2017, encouraging kids to explore the ravines and woods off-trail. This was followed by the opening of a $1.5 million inclusive playground in April 2025, designed to accommodate children of all physical abilities. The nature center also underwent major renovations to include immersive, three-dimensional exhibits and a new butterfly house. Today, the park encompasses 653 acres, preserving a unique geologic and biological corridor amidst the bustling Westerville and Northeast Columbus area. **Map of the Park** Here is a map of [Blendon Woods](https://www.metroparks.net/wp-content/uploads/2025/05/BLN_map_Inclusive-Playground-and-Butterfly-Trail_May-2025_1980px.png). **Summary** For this event, we will hike the Lake View, Hickory Ridge, Ripple Rock, Overlook, Brookside, and Sugarbush Trails. This sounds like a lot, but it will really be only a little over five miles. Blendon Woods has a few hills here and there, but it's not one of the more strenuous metro parks. **Where We'll Meet** We'll meet just in front of the Nature Center. This is about a mile into the park from the main entrance. You have to go past the Ranger Station and the Shadblow Reservable Area to get to it, so don't stop too early at the Ranger Station and get it confused with the Nature Center. **After the Hike** Afterward, we will head over to [Forbidden Root Restaurant & Brewery](https://forbiddenroot.com/restaurants/columbus-ohio/) at Easton for [drinks](https://forbiddenroot.com/restaurants/columbus-ohio/#dinner-menu) and [food](https://forbiddenroot.com/wp-content/uploads/Cbus-Food.pdf). We should be there by 5 if you can't make the hike and just want to join us for drinks. The brewery's actual address is [4080 Worth Ave, Columbus, OH 43219](https://www.google.com/maps/place/4080+Worth+Ave,+Columbus,+OH+43219/data=!4m2!3m1!1s0x88388a86d10b6619:0x4d42b470a5cf11d3?sa=X&ved=1t:242&ictx=111); however, I recommend pointing your GPS to the [Worth Garage](https://www.google.com/maps/place/Worth+Garage/@40.0542293,-82.9137962,17z/data=!3m1!4b1!4m6!3m5!1s0x88388b4df6082825:0x17582f0eccd9dda1!8m2!3d40.0542293!4d-82.9137962!16s%2Fg%2F11rzfvvv8b?entry=ttu&g_ep=EgoyMDI2MDQxNS4wIKXMDSoASAFQAw%3D%3D) across the street. Parking in this garage is free as long as you're not on the first floor, and it is literally right next to the brewery.

The theme for May is Thriller. • The book we will be discussing is A Good Girl’s Guide to Murder by Holly Jackson. (determined by votes from April Book Club. Let me know if you'd like a free digital copy of the book) • This event will be at the main library. Feel free to come whether or not you've started or finished the book. • Small snacks will be provided. You're welcome to bring your own snacks & drinks too! Let me know if you’d like to volunteer to bring snacks or drinks for the group.

Sleep in on Sundays. When you've had your fill of pajama-time, roll out and have some tasty brunch with your fellow Humanists!