Publications
Publications
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(3,668)
- Faculty Publications (1,008)
- September 2023
- Teaching Note
Apple’s iPhone Revolution: Pioneering the Circular Economy
By: George Serafeim
Teaching Note for HBS Case 123-089. The case describes the Trade-In system for iPhones that allow iPhones to be refurbished and reused or to be recycled. The case provides information for the students to analyze the financial attractiveness of the Trade-In system and... View Details
- September 2023 (Revised January 2024)
- Case
Helmy Abouleish: Making a Desert Bloom
By: Geoffrey G. Jones and Maxim Pike Harrell
This case examines the history of prominent Egyptian-based social enterprise SEKEM from its foundation in 1977 until the COP27 conference held in Sharm El-Sheikh in 2022. Led by father and son team Ibrahim and Helmy Abouleish, SEKEM turned desert into farmland using... View Details
- September 2023
- Case
Diamond Standard
By: Lauren H. Cohen, Zhaoheng Gong and Grace Headinger
Cormac Kinney, Founder and CEO of Diamond Standard, was on a mission to transform the U.S. diamond market through unlocking the precious gems as market-traded assets. As a serial FinTech entrepreneur, he hoped to add an additional service to his vault: Carats. The... View Details
Keywords: Tokenization; Fintech; Cryptocurrency; Liquidity; Digital; Rare Earth Minerals; Decentralized; Crypto Economy; Financial Product; Metals; Diamonds; Commodity; Assets; Financial Instruments; Financial Institutions; Financial Markets; Investment; Technological Innovation; Natural Resources; Business Startups; Currency; Financial Services Industry; United States
- 2025
- Working Paper
Global Harms, Local Profits: How the Uneven Costs of Natural Disasters Affect Support for Green Political Platforms
By: Silvia Pianta and Paula Rettl
Large-scale fires are becoming increasingly common due to climate change. While conventional
wisdom suggests that firsthand experiences with natural disasters foster green coalitions
by raising awareness of environmental degradation, we propose an alternative... View Details
Keywords: Climate Impact; Politics; Environmental Issues; Environmental Protection; Economic Analysis; Economic Behavior; Economic Geography; Economy; Economics; Climate Change; Environmental Management; Political Elections; Natural Disasters; Green Technology; Environmental Sustainability; Latin America; Brazil
- September 2023 (Revised August 2024)
- Teaching Note
On
By: Ramon Casadesus-Masanell, Karolin Frankenberger, Sascha Mader, Jordan Mitchell and Karen Elterman
Teaching Note for "On," HBS Case No. 723-430. On is a premium performance running shoe company founded in Switzerland in 2010. The company rapidly gained traction through its unique CloudTec cushioning technology, its innovative midsole plate called the Speedboard, and... View Details
Keywords: Brands and Branding; Business Growth and Maturation; Business Model; Business Startups; Business Strategy; Competitive Advantage; Competitive Strategy; Corporate Strategy; Customer Focus and Relationships; Customer Satisfaction; Digital Marketing; Disruptive Innovation; Distribution Channels; Entrepreneurship; Environmental Sustainability; Global Strategy; Initial Public Offering; Innovation and Invention; Innovation Strategy; Market Entry and Exit; Marketing Strategy; Product Design; Product Development; Product Marketing; Social Media; Strategy; Supply Chain Management; Technological Innovation; Apparel and Accessories Industry; Consumer Products Industry; Manufacturing Industry; Retail Industry; Sports Industry; Europe; Germany; Switzerland; United States
- September 2023 (Revised September 2023)
- Supplement
On Slides
By: Ramon Casadesus-Masanell, Karolin Frankenberger, Sascha Mader, Jordan Mitchell and Karen Elterman
Slides to support the teaching of the On case, 723-430. On is a premium performance running shoe company founded in Switzerland in 2010. The company rapidly gained traction through its unique CloudTec cushioning technology, its innovative midsole plate called the... View Details
Keywords: Brands and Branding; Business Growth and Maturation; Business Model; Business Startups; Business Strategy; Competitive Advantage; Competitive Strategy; Corporate Strategy; Customer Focus and Relationships; Customer Satisfaction; Digital Marketing; Disruptive Innovation; Distribution Channels; Entrepreneurship; Environmental Sustainability; Global Strategy; Initial Public Offering; Innovation and Invention; Innovation Strategy; Market Entry and Exit; Marketing Strategy; Product Design; Product Development; Product Marketing; Social Media; Strategy; Supply Chain Management; Technological Innovation; Apparel and Accessories Industry; Consumer Products Industry; Manufacturing Industry; Retail Industry; Sports Industry; Europe; Germany; Switzerland; United States
- September 2023
- Article
Stock Price Reactions to ESG News: The Role of ESG Ratings and Disagreement
By: George Serafeim and Aaron Yoon
We investigate whether ESG ratings predict future ESG news and the associated market reactions. We find that the consensus rating predicts future news, but its predictive ability diminishes for firms with large disagreement between raters. Relation between news and... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Ratings; ESG Reporting; ESG Disclosure Metrics; Sustainability; Investments; Disagreement; Rating Disagreement; Ratings; Environmental Sustainability; Social Issues; Corporate Social Responsibility and Impact; Performance; News; Investment; Financial Markets; Stocks; Price
- September 2023
- Article
The Health Costs of Dirty Energy: Evidence from the Capacity Market in Colombia
By: Achyuta Adhvaryu, Theresa Molina, Anant Nyshadham, Jorge Tamayo and Nicholas Torres
The health effects of “dirty” (fossil fuel driven) energy production are difficult to measure accurately due to the endogeneity of fuel choice. We exploit an electricity policy in Colombia that generates a price-based trigger for the use of thermal energy sources.... View Details
- Article
Update on E-liability Accounting
By: Robert Kaplan, Karthik Ramanna and Piyush Jha
Since publication of the original E-liability carbon accounting paper (HBR, Nov 2021), we created the E-liability Institute to help companies, governments, and nonprofits implement the method. The Institute’s mission is to test and validate the method, and develop... View Details
- August 2023 (Revised October 2024)
- Case
Accounting Outages at Plug Power? (A)
By: Jonas Heese, Joseph Pacelli and James Barnett
Set immediately after a December 2019 short-seller attack, the case explores Plug Power’s long challenging history. It then focuses on two key issues raised in the short-seller report related to lease accounting and stock warrants that Plug purportedly used to boost... View Details
- August 2023 (Revised October 2024)
- Supplement
Accounting Outages at Plug Power? (B)
By: Jonas Heese, Joseph Pacelli and James Barnett
The case is set in spring 2021, immediately after Plug Power made financial restatements dating back to 2018. The case describes the restatements, which revealed that Plug was reclassifying expense items to boost gross profits. View Details
- August 2023 (Revised July 2024)
- Technical Note
Power-to-X
By: Willy Shih, Michael W. Toffel and Kelsey Carter
To reduce greenhouse gas emissions that were contributing to climate change, the world needs to transition from fossil fuels to renewable energy sources. Power-to-X (PtX) refers to an array of processes that convert electricity (power) to various gaseous and liquid... View Details
- August 2023 (Revised January 2024)
- Supplement
Arla Foods: Data-Driven Decarbonization (A)
By: Michael Parzen, Michael W. Toffel, Amram Migdal and Susan Pinckney
Arla implemented a data-based price incentive system 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; Business Earnings; Earnings Management; Environmental Accounting; Agribusiness; Animal-Based Agribusiness; Acquisition; Mergers and Acquisitions; Decision Making; Decisions; Voting; Environmental Management; Climate Change; Environmental Regulation; Environmental Sustainability; Green Technology; Pollution; Moral Sensibility; Values and Beliefs; Financial Strategy; Price; Profit; Revenue; Food; Geopolitical Units; Global Strategy; Ownership Type; Cooperative Ownership; Performance Efficiency; Performance Evaluation; Problems and Challenges; Natural Environment; Science-Based Business; Business Strategy; Commercialization; Cooperation; Corporate Strategy; Food and Beverage Industry; Agriculture and Agribusiness Industry; Europe; United Kingdom; European Union; Germany; Denmark; Sweden; Luxembourg; Belgium
- August 2023 (Revised March 2024)
- Case
Arla Foods: Data-Driven Decarbonization (A)
By: Michael Parzen, Michael W. Toffel, Susan Pinckney and Amram Migdal
The case describes Arla’s history, in particular its climate change mitigation efforts, and how it implemented a price incentive system to motivate individual farms to implement scope 1 greenhouse gas emissions mitigation measures and receive a higher milk price. The... View Details
Keywords: Dairy Industry; Business Earnings; Agribusiness; Animal-Based Agribusiness; Acquisition; Mergers and Acquisitions; Decision Making; Decisions; Voting; Environmental Management; Climate Change; Environmental Regulation; Environmental Sustainability; Green Technology; Pollution; Moral Sensibility; Values and Beliefs; Financial Strategy; Price; Profit; Revenue; Food; Geopolitical Units; Global Strategy; Ownership Type; Cooperative Ownership; Performance Efficiency; Performance Evaluation; Problems and Challenges; Natural Environment; Science-Based Business; Business Strategy; Commercialization; Cooperation; Corporate Strategy; Food and Beverage Industry; Agriculture and Agribusiness Industry; Europe; United Kingdom; European Union; Germany; Denmark; Sweden; Luxembourg; Belgium
- August 2023 (Revised January 2024)
- Supplement
Arla Foods: Data-Driven Decarbonization (B)
By: Michael Parzen, Michael W. Toffel, Susan Pinckney and Amram Migdal
The case describes Arla’s history, in particular its climate change mitigation efforts, and how it implemented a price incentive system to motivate individual farms to implement scope 1 greenhouse gas emissions mitigation measures and receive a higher milk price. The... View Details
Keywords: Dairy Industry; Earnings Management; Environmental Accounting; Animal-Based Agribusiness; Mergers and Acquisitions; Decisions; Voting; Climate Change; Environmental Regulation; Environmental Sustainability; Green Technology; Pollution; Moral Sensibility; Values and Beliefs; Financial Strategy; Price; Profit; Revenue; Food; Geopolitical Units; Cross-Cultural and Cross-Border Issues; Global Strategy; Cooperative Ownership; Performance Efficiency; Performance Evaluation; Problems and Challenges; Natural Environment; Science-Based Business; Business Strategy; Commercial Banking; Cooperation; Corporate Strategy; Motivation and Incentives; Food and Beverage Industry; Agriculture and Agribusiness Industry; Europe; United Kingdom; European Union; Denmark; Sweden; Luxembourg; Belgium
- August 2023
- Case
BYD, China, and Global Electric Vehicle Rivalry
By: Cynthia A. Montgomery and Max Hancock
In 2023, BYD, a Chinese electric vehicle (EV) maker, surpassed Tesla to become the world's best-selling EV brand. BYD began selling mobile phone batteries in 1995, acquired a license to sell vehicles in 2002, and spent two decades building its EV brand, growing its... View Details
- August 2023 (Revised September 2023)
- Case
T.G.S. Transportation: Battery Electric or Hydrogen?
By: Willy C. Shih
Peter Schneider, the President of T.G.S. Transportation, Inc., faced a choice. His company operated drayage trucks that moved containerized cargo between the Ports of Los Angeles, Long Beach, and Oakland to customers across the State of California, with a focus on the... View Details
- 2024
- Working Paper
Migration, Climate Similarity, and the Consequences of Climate Mismatch
By: Marguerite Obolensky, Marco Tabellini and Charles Taylor
This paper examines the concept of “climate matching” in migration—the idea that migrants seek out destinations with familiar climates. Focusing on the US, we document that temperature distance between origin and destination predicts the distribution of migrants across... View Details
Keywords: Migration; Climate; Immigration; Residency; Weather; Ethnicity; Climate Change; Geographic Location; Policy; United States
- 2024
- Working Paper
The Crowdless Future? Generative AI and Creative Problem Solving
The rapid advances in generative artificial intelligence (AI) open up attractive opportunities for creative problem-solving through human-guided AI partnerships. To explore this potential, we initiated a crowdsourcing challenge focused on sustainable, circular economy... View Details
- 2023
- Other Unpublished Work
If 3 Was 9
One determinant of where economies and markets are headed is how well we handle the climate crisis. Headlines on the climate tend to emphasize two points. First, average global temps are rising, with it being the hottest summer in 1,000 centuries per some estimates.... View Details