Buildings are bad news for the climate -- but they don't have to be. While our structures are currently responsible for a third of global energy consumption and emissions, a future where they create more energy than they produce is possible. Energy policy analyst Ksenia Petrichenko has a three-tiered strategy for thinking differently about buildings, transforming them from passive users to active players in the energy system and bringing us closer to our climate targets. Countdown is TED's global initiative to accelerate solutions to the climate crisis. The goal: to build a better future by cutting greenhouse gas emissions in half by 2030, in the race to a zero-carbon world. Get involved at countdown.ted.com/sign-up Learn more about #TEDCountdown: Twitter: twitter.com/TEDCountdown Instagram: www.instagram.com/tedcountdown Facebook: www.facebook.com/TED Website: countdown.ted.com If you love watching TED Talks like this one, become a TED Member to support our mission of spreading ideas: ted.com/membership The TED Talks channel features talks, performances and original series from the world's leading thinkers and doers. Subscribe to our channel for videos on Technology, Entertainment and Design — plus science, business, global issues, the arts and more. Visit TED.com to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more. youtu.be/wL8X31XWZW8 TED's videos may be used for non-commercial purposes under a Creative Commons License, Attribution–Non Commercial–No Derivatives (or the CC BY – NC – ND 4.0 International) and in accordance with our TED Talks Usage Policy: www.ted.com/about/our-organization/our-policies-terms/ted-talks-usage-policy. For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), please submit a Media Request at media-requests.ted.com #TED #TEDTalks #energy

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