Our fastest path to a low carbon world is using the billions of buildings which already exist. Smart, rapid, affordable retrofits to improve energy performance are essential, but doing so has a carbon cost of its own. This session is about questions as much as answers. How do we evaluate cost vs. return in terms of carbon? How long a payback is acceptable? Do we have to be Tally experts? Material experts? Create our own spreadsheets? Build only with straw? Travel only on foot? Give up and change professions? With case studies, data, Life Cycle Assessment tools, and thoughtful conversation, three architects will share their perspectives on low carbon retrofits and material choices to save the planet, earning LEED points and big handprints (vs. footprints) along the way.

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