Dr. Ittay Eyal, who has been working on "green mining" of cryptocurrencies and on efficient blockchain protocols in general, was quoted in VICE on Bitcoin's sustainability. This work is part of a larger research push at the Cornell-based Initiative for Cryptocurrencies and Smart Contracts (IC3) that is generally focusing on green blockchains.
Professor Emin Gun Sirer was quoted in the New York Times on the recent industry-wide move to use blockchains for supply chain management, and IBM's recent efforts in this space