A 50 minute, (usually) student-led tour of MIT D-Lab, D-Lab prototypes, and our workshop! Hear about the 23-year history of D-Lab, our founding director Amy Smith, our 12+ MIT classes, research groups, humanitarian innovation program and more! Not free at tour time? Stop by anytime to look around or email d-lab-tours@mit.edu.

Have some fun(nel) on a tunnel or sun(nel) walk! Join us for a 30-minute volunteer-led walk either through MIT’s famous tunnel system or around Killian Court. As the weather gets warmer, walk leaders may choose to take the group outside. Is the weather warm and you missed the start? Find the group on Killian Court and join in!Sun(nel) Walk Leaders will identify themselves by holding a white flag at the meeting location.Location details: Meet in the atrium by the staircase. [See image below]Prize Drawing: Attend a walk and scan a QR code from the walk leaders to be entered into a drawing for a getfit canvas boat tote bag at the end of the getfit challenge. The more walks you attend, the more entries you get. Winner will be drawn and notified at the end of April. Winner does not need to be a getfit participant.Disclaimer: Tunnel walks are led by volunteers. In the rare occasion when a volunteer isn’t able to make it, we will do our best to notify participants. In the event we are unable to notify participants and a walk leader does not show up, we encourage you to walk as much as you feel comfortable doing so. We recommend checking this calendar just before you head out.Getfit is a 12-week fitness challenge for the entire MIT community. These tunnel walks are open to the entire MIT community and you do not need to be a current getfit participant to join.

This spring, to celebrate 25 years of discovery, the McGovern Institute is hosting a half-day symposium. The event will showcase the institute’s major achievements and explore the future direction of neuroscience. Highlights include a talk by Robert Langer and lightning talks from six distinguished McGovern alumni.The event is free and open to the public, but registration is required.Register: https://mcgovern.science/symposium2025Symposium Schedule1:00 pm - WELCOMING REMARKS Robert Desimone - Director, McGovern Institute, Doris and Don Berkey Professor of Neuroscience1:15 pm - ANNIVERSARY REFLECTIONS Lore Harp McGovern - Co-Founder, McGovern Institute Phillip A. Sharp - Founding Director, McGovern Institute; Institute Professor emeritus, MIT; Koch Institute for Integrative Cancer Research, MIT1:30 pm - ROBERT LANGER, Institute Professor, MIT; Board Member, McGovern Institute, MIT “An Engineering Road Not Taken: From Research to Clinical Translation”1:50 pm - ANNIVERSARY VIDEO “McGovern at 25” – produced by Glass Ink Media, Julie Pryor2:00 pm - ROBERT DESIMONE, Director, McGovern Institute, Doris and Don Berkey Professor of Neuroscience “Neuroscience Reimagined: What’s Next for the McGovern Institute”2:30 pm - ALUMNI PRESENTATIONS Introductions by Evelina Fedorenko, McGovern Institute- XIAN GAO (FENG LAB), Emugen Therapeutics LLC “Gene therapy-based circuit modulation for brain disorders”- MARK HOWE (GRAYBIEL LAB), Boston University “Probing Neuromodulator Signals for Learning and Action”- DMITRIY ARONOV (FEE LAB), Columbia University, HHMI “Using food-caching chickadees to study memory in the brain”3:15 pm - BREAK3:30 pm - ALUMNI PRESENTATIONS (CONT.)- JAKOB VOIGTS (HARNETT LAB), HHMI Janelia Research Campus “Neural dynamics underlying sequential reasoning in naturalistic behavior”- ANYA IVANOVA (FEDORENKO LAB), Georgia Tech “Dissociating language and thought in humans and in machines” - JENELLE FEATHER (McDERMOTT LAB), Flatiron Institute “Designing visual stimuli to test models of perception”4:15 pm - ALUMNI PANEL Moderated by Stephan Kim, Fiete Lab5:15 pm - CLOSING REMARKS Nergis Mavalvala - Dean, School of Science, MITANNIVERSARY CELEBRATION IN ATRIUM

Please join us this Friday, April 11th from 2p-5p at W97-269 for our Technical Theater Workshop. Our amazing Professor of the Pratice, Josh Higgason will do an Intro to Projection Design. No experience is necessary to attend this workshop.Free bubble tea will be served!

Ten minutes for your mind@2:50 every day at 2:50 pm in multiple time zones:Europa@2:50, EET, Athens, Helsinki (UTC+2) (7:50 am EST) https://us02web.zoom.us/j/88298032734Atlantica@2:50, EST, New York, Toronto (UTC-4) https://us02web.zoom.us/j/85349851047Pacifica@2:50, PST, Los Angeles, Vancouver (UTC=7) (5:50 pm EST) https://us02web.zoom.us/j/85743543699Almost everything works better again if you unplug it for a bit, including your mind. Stop by and unplug. Get the benefits of mindfulness without the fuss.@2:50 meets at the same time every single day for ten minutes of quiet together.No pre-requisite, no registration needed.Visit the website to view all @2:50 time zones each day.at250.org or at250.mit.edu

Speaker: Fan Qin (Beijing Normal University)In person or on Zoom: https://mit.zoom.us/j/92441268505Title: Cluster algebras and analogs of dual canonical basesAbstract:In this talk, we first give a gentle introduction to cluster algebras.Next, we construct common triangular bases for almost all the known (quantum) cluster algebras from Lie theory. These bases provide analogs of the dual canonical bases, long anticipated in cluster theory. In cases where the generalized Cartan matrices are symmetric, we show that these cluster algebras and their bases are quasi-categorified.Finally, we extend cluster algebras from finite ranks to infinite ranks. This extension allows us to show that, for cluster algebras associated with double Bott-Samelson cells, the standard bases can be computed via a braid group action when the Cartan matrix is of finite type.