by Michael W. Toffel - Publications - Faculty & Research - Harvard Business School

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March 2025
Case

Hurtigruten: Sea Zero

By: Christian Kaps and Michael W. Toffel

Hurtigruten was deciding whether the next ship they built should be fully electric. But such a vessel's battery, the size of electric cars, needed to be charged on the ship's multi-day voyage along the Norwegian coast. Before making such a $250 million investment, the... View Details

Keywords: Energy Sources; Alternative Energy; Ship Transportation; Environmental Regulation; Environmental Sustainability; Innovation and Management; Green Technology; Investment; Corporate Social Responsibility and Impact; Shipping Industry; Tourism Industry; Transportation Industry; Travel Industry; Battery Industry; Norway; Europe

September 2023
Supplement

Arcos Dorados: Decarbonizing McDonald’s in Latin America – Sustainability-linked Bonds and Executive Compensation

By: George Serafeim and Michael W. Toffel

June 2019
Teaching Note

Improving Worker Safety in the Era of Machine Learning: Practicum in Predictive Analytics

By: Michael W. Toffel and Dan Levy

Teaching Note for HBS No. 618-019. View Details

June 2019
Supplement

Improving Worker Safety in the Era of Machine Learning: Introduction to Predictive Analytics

By: Michael W. Toffel and Dan Levy

June 2019
Teaching Note

Improving Worker Safety in the Era of Machine Learning: Introduction to Predictive Analytics

By: Michael W. Toffel and Dan Levy

Teaching Note for HBS No. 618-019. View Details

March 24, 2015
Article

Starbucks' 'Race Together' Campaign and the Upside of CEO Activism

By: Aaron Chatterji and Michael W. Toffel

When Starbucks CEO Howard Schultz asked his baristas to engage customers in a discussion about race in America, it was a clear case of the growing trend of "CEO activism." Despite the criticism of that particular initiative, CEO activism—from Shultz to Chick-Fil-A's... View Details

Keywords: Leadership; Social Issues; Corporate Social Responsibility and Impact; Communication Strategy; Race

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November 2011 (Revised January 2014)
Teaching Note

FIJI Water: Carbon Negative?

By: Michael W. Toffel and Francesca Gino

Keywords: Energy; Pollutants

May 2004
Article

Environmental Implications of Wireless Technologies: News Delivery and Business Meetings

By: Michael W. Toffel and Arpad Horvath

Keywords: Information Technology; Communication; Information; Environmental Sustainability; Business Ventures; Technology Industry

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January 2023
Supplement

Global Sourcing at Nike

By: Nien-hê Hsieh and Michael W. Toffel

Powerpoint Supplement for “Global Sourcing at Nike,” HBS No. 619-008 View Details

July 2009 (Revised January 2014)
Case

Sustainability at Millipore

By: Michael W. Toffel and Katharine Lee

This case describes Millipore Corporation's approach to becoming a more environmentally sustainable company. As he prepared for his quarterly meeting with the CEO, the Director of Sustainability needed to develop positions on several issues. Tactically, he needed to... View Details

Keywords: Investment; Corporate Disclosure; Operations; Corporate Social Responsibility and Impact; Organizational Structure; Natural Environment; Environmental Sustainability; Pollutants

September 2023
Supplement

Arcos Dorados: Decarbonizing McDonald’s in Latin America – Decarbonization Activities

By: George Serafeim and Michael W. Toffel

15 Sep 2016
News

US Competitiveness Report Sees ‘A Nation Divided’

fact-based, nonpartisan effort to understand what makes the US economy competitive. In 2016, with US economic performance lackluster and the public discourse in this critical presidential campaign muddled, the Project’s lead faculty members, professors View Details

April 2025 (Revised June 2025)
Supplement

Arla Foods: Data-Driven Decarbonization (A) and (B) PowerPoint Supplement

By: Michael Parzen, Michael W. Toffel and Susan Pinckney

Arla implemented a data based price incentive systems to measure, track, and influence climate friendly changes to reduce CO2 emissions across the world’s fourth largest dairy cooperative. View Details

Keywords: Dairy Industry; Food and Beverage Industry; Europe; European Union; United Kingdom; Germany; Denmark; Sweden; Netherlands; Luxembourg; Belgium

Article

A 680,000-Person Megastudy of Nudges to Encourage Vaccination in Pharmacies

By: Katherine L. Milkman, Linnea Gandhi, Mitesh S. Patel, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Jake Rothschild, Jonathan E. Bogard, Ilana Brody, Christopher F. Chabris, Edward Chang, Gretchen B. Chapman, Jennifer E. Dannals, Noah J. Goldstein, Amir Goren, Hal Hershfield, Alex Hirsch, Jillian Hmurovic, Samantha Horn, Dean Karlan, Ariella S. Kristal, Cait Lamberton, Michael N. Meyer, Allison H. Oakes, Maurice E. Schweitzer, Maheen Shermohammed, Jaochim H. Talloen, Caleb Warren, Ashley V. Whillans, Kuldeep N. Yadav, Julian J. Zlatev, Ron Berman, Chalanda N. Evans, Rahul Ladhania, Jens Ludwig, Nina Mazar, Sendhil Mullainathan, Christopher K. Snider, Jann Spiess, Eli Tsukayama, Lyle Ungar, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth

Encouraging vaccination is a pressing policy problem. To assess whether text-based reminders can encourage pharmacy vaccination and what kinds of messages work best, we conducted a megastudy. We randomly assigned 689,693 Walmart pharmacy patients to receive one of 22... View Details

Keywords: Vaccination; Vaccines; Nudges; Communication Strategy; Communication Technology; Consumer Behavior; Health Care and Treatment

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01 Mar 2013
News

Getting Smart About Philanthropy

Advisory Board. Ted Turner, Eli Broad, Pierre Omidyar, Michael J. Fox and Deborah W. Brooks, Jennifer and Peter Buffett, Melinda Gates, and Jean and Steve Case also participated. In tandem with the project,... View Details

April 2025
Background Note

Climate Change Adaptation with Artificial Intelligence and Machine Learning

By: Michael W. Toffel and Nabig Chaudhry

Artificial Intelligence (AI) and machine learning (ML) have emerged as powerful tools to address climate change. This note summarizes a wide range of the uses of AI/ML to drive climate change adaptation and resilience, the measures organizations and governments are... View Details

Keywords: Climate Change; Adaptation

March 2025
Case

Calyx Global: Rating Carbon Credits

By: Michael W. Toffel and Adam Chen

This case describes how rating agencies and other organizations are seeking to improve the quality of carbon credits sold in the voluntary carbon market to organizations seeking to use them to supplement their internal decarbonization efforts to meet their net zero... View Details

Keywords: Service Design; Certification; Auditing; Auditor Reputation; Carbon Credits; Carbon; Rating Agency Disagreement; Ratings; Climate Change; Business Model; Environmental Sustainability; Corporate Social Responsibility and Impact; Conflict of Interests; Reputation; Business Strategy

November 2022 (Revised March 2023)
Supplement

JUUL and the Vaping Revolution: A 2022 Update

By: Michael W. Toffel and Sarah Mehta

This slide deck provides a brief update (2019-2022) on the rise and fall of JUUL Labs, the maker of the popular JUUL e-cigarette. View Details

November 2022 (Revised March 2023)
Supplement

JUUL and the Vaping Revolution: A 2022 Update

By: Michael W. Toffel and Sarah Mehta

This case provides a brief update (2019-2022) on the rise and fall of JUUL Labs, the maker of the popular JUUL e-cigarette. View Details

September 2017 (Revised March 2023)
Background Note

Production Processes

By: Willy Shih and Michael W. Toffel

This note describes four broad categories of process architectures and then examines the nature of task assignment that typically would be found in a factory organized along the lines of each process type. It then delves more deeply into work flow policies, materials... View Details

Keywords: Production Management; Production Planning; Production Scheduling; Process Analysis; Process Maps; Processing Times; Process Improvement; Production; Management; Product; Consumer Products Industry; Manufacturing Industry

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