Climate action, here and now
<p>A few years ago, David Hsu started taking a keen interest in some apartment buildings in Brooklyn and the Bronx — but not because he was looking for a place to live. Hsu, an associate professor at MIT, works on urban climate change solutions. The property owners were retrofitting their buildings to make them net-zero emitters of carbon dioxide via better insulation, ventilation, and electric heating and appliances. They also wanted to see the effect on interior air quality.</p>
<p>In the process, the owners started working with Hsu and an MIT team to assess the results using top-grade air quality sensors. They found that beyond its climate benefits, retrofitting lowered indoor pollutants from high levels to almost-undetectable levels. It is a win-win outcome.</p>
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