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Climate warming is causing wildfire activity to increase in boreal forests and arctic tundra of the Far North. Fires are burning more deeply into thick organic soils and destabilizing permafrost, releasing carbon to the atmosphere that has been stored for centuries to millennia. At a global scale, these wildfires are impacting people through production of smoke and the release of greenhouse gasses that contribute to climate warming. At a local scale, increasing wildfire activity is creating new risks and vulnerabilities for local people that depend upon these ecosystems for their wellbeing. In this talk, Dr. Mack will discuss the ecological mechanisms that drive this positive feedback between wildfire and climate warming. She will explore how ecosystems and local human communities in Alaska are responding to increasing wildfire, and how we can employ emerging ideas in forest and fire management to reduce fire activity and promote human wellbeing.

Dr. Mack will present two public lectures as part of Harvard’s annual Charles Bullard Lecture Series— in Cambridge on the evening of October 8, and in Petersham (and on Zoom) on the morning of October 9.

Join us at our community Freecycle in the Smith Campus Center! We will have plenty of goods and decorations to help you get into the holiday spirit!

Drop off reusable goods you no longer need, and browse an excellent selection of items brought by others. Popular items include books, clothes, and household goods. Only donate items in clean and working condition.

Everyone is welcome, and no donation is necessary to shop!

Join us at our community Freecycle at the Science and Engineering Complex!

Drop off reusable goods you no longer need, and browse an excellent selection of items brought by others. Popular items include books, clothes, and household goods. Only donate items in clean and working condition.

Everyone is welcome, and no donation is necessary to shop!

Join us at our community Freecycle in the Smith Campus Center!

Drop off reusable goods you no longer need, and browse an excellent selection of items brought by others. Popular items include books, clothes, and household goods. Only donate items in clean and working condition.

Everyone is welcome, and no donation is necessary to shop!

Are you a Harvard or MIT student or alumni interested in a career in climate and sustainability? Or an employer interested in reaching Harvard University and MIT students with career opportunities? The Salata Institute Climate and Sustainability Career Expo is a collaborative effort across Harvard schools and MIT to connect organizations focused on climate, sustainability, and the environment with Harvard undergraduates, graduate students, and alumni. Join us for the next expo on Friday, November 20, 2026 from 1:00 – 4:30pm.

Did you know that the Weld Hill Research Building at the Arboretum has the largest geothermal heating system at Harvard? There are 88 wells hidden under the namesake hill which help heat and cool the state-of-the-art research building. Join Head of Operations and Project Management Danny Schissler for a behind-the-scenes look at this fascinating system.

This tour will be a mix of indoors and outdoors.