# Research Projects
**Source**: https://cre.mit.edu/research/research-projects/page/2/
**Parent**: https://cre.mit.edu/research/research-projects/
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| [Title](#) | [Year](#) | PIs | Researchers | Sponsor |
| --- | --- | --- | --- | --- |
| [Subway Network and Urban Vibrancy](https://cre.mit.edu/research/research-projects/subway-network-and-urban-vibrancy/) | 2020 - 2021 | Siqi Zheng, Adriano Borges Costa (lead) | Camila Ramos, Tabea Sonnenschein, Raj A Mehta, Liaoliao Duan, Weizeng Sun | Center for Real Estate |
| [Clean Air in Consumer Cities](https://cre.mit.edu/research/research-projects/clean-air-in-consumer-cities/) | 2017 - 2019 | Siqi Zheng, Jianghao Wang | Matthew Kahn, Chengtao Lin, Cong Sun, Weizeng Sun, Xiaonan Zhang | Center for Real Estate |
| [New Cities as Economic Engine](https://cre.mit.edu/research/research-projects/new-cities-as-economic-engine/) | 2017 - 2020 | Siqi Zheng (lead) | Weizeng Sun, Jianfeng Wu, Matthew Kahn | Center for Real Estate |
| [Environmental Quality and Real Estate](https://cre.mit.edu/research/research-projects/environmental-quality-and-real-estate/) | 2014 | Siqi Zheng (lead) | Matthew Kahn, Yuming Fu, Jing Cao, Hongyu Liu, Cong Sun | Center for Real Estate |
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