Science & Natural History   

Evolution, genetics, and embryology were separate branches of biology. But, now they come together in a 21st century science called Evodevo — evolutionary developmental biology — a discipline that focuses on how changes in embryonic development lead to the evolution of new traits and new species. In this class you will see how the interaction of genes in the embryo explains not only how an individual organism develops, but also how it evolved. Then, by comparing the development of different species, you will see how features like limbs, eyes, and other complex structures evolved over time.

New in-person course. Format includes lecture and discussion

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REQUIRED BOOK: Some Assembly Required, Neil Shubin, ISBN 9781101972687

This course will examine how we know the facts of the universe, from the unimaginably distant and old to the incredibly small and strange. No math unless requested! No books required. New in-person course. Format includes lecture and discussion.

Most conversations about aging focus on lifespan, but brainspan (how long our mind stays sharp) matters more. In this course, we will explore how the brain ages and what science reveals about protecting memory, balance, and clarity. Topics include normal changes versus early dementia, neuroplasticity, nutrition, sleep, stress, social ties, and purpose. Each session blends accessible science with self-tests and take-home practices. We will also build a personalized Cognitive Health Scorecard to track habits and strengthen resilience.

Back by popular demand, this updated course offers a clear, engaging introduction to Artificial Intelligence (AI) and how it’s rapidly transforming our world. From self-driving cars to chatbots and precision medicine, we will explore how AI works, where it’s headed, and what it means for society. No tech experience needed—just curiosity! With fresh examples and timely updates, participants will gain a solid understanding of the opportunities and challenges AI presents today.

Science is full of surprises. Dyes, accidentally discovered, launched the modern pharmaceutical industry. A failed experiment opened the door to new physics. Discoveries are never just facts. They are moments of creativity, struggle, and chance with farreaching consequences. In this course, we will explore the human side of science, tracing breakthroughs in biology, chemistry, physics, and more. We will ask not only what was found, but how and why it matters.

Drought, extreme weather, and habitat loss for insects and wildlife are challenging for gardening experts as well as beginners. What about “No Mow May,” native species, ground covers, and the 70% rule? Should we rake leaves or leave them? Why is using Latin names important? Learn about current issues, problems, and possible solutions from members of the Longfellow Garden Club.

New in-person workshop. Format includes lecture, discussion, and film.

Led by two Maine Master Naturalists, the course will explore selected topics associated with springtime transformations in Maine. Topics will include changing landscapes and human influences, trees and plants, amphibians and vernal pools, birds and migration, and ferns and lichen. The course will involve two field trips and several hands-on activities. Students will maintain a nature journal and report their phenological observations.

New in-person course. Format includes lecture, discussion, hands-on learning, and movement.

Spring ephemerals are wildflowers that bloom very briefly before the trees leaf out. At the morning classroom session, we will become familiar with the flowers through a PowerPoint presentation. In the afternoon, we will carpool to a nearby location to seek out the flowers. The walk may involve uneven ground but we will be walking slowly. The morning session will be held rain or shine. The afternoon walk will be rescheduled for one week later if it rains. Bring field guides and a hand lens if you have them, bug dope, and good walking shoes.

Repeat in-person workshop. Format includes lecture, hands-on learning, and movement.