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A recent study by senior lecturer Mark Kritzman and co-author found that, irrespective of their high market concentration, heavily weighted stocks aren't necessarily riskier investments. It's a "fallacy" to equate market weight with risk. A highly concentrated market is a "natural consequence" of growth, not an "aberration," they said.

Senior lecturer Robert C. Pozen wrote: "The refund debate underscores the need for clear rules. Who is entitled to a refund: the plaintiffs in this case, all the businesses that paid import duties or all consumers who paid higher prices for imported goods? When a president relies on expansive readings of emergency statutes and rapidly changes tariff rates on an ad hoc basis, the result is litigation and political chaos."

Professor Catherine Wolfram wrote: "A report that I co-authored with colleagues from the Global Climate Policy Project at Harvard and MIT shows that a coalition of countries pricing carbon in heavy industries could generate billions of dollars in revenue, while also meaningfully reducing global emissions."

In a recent paper, associate dean for climate and sustainability Christopher Knittel, professor Catherine Wolfram, and co-author estimated that Americans are paying between $400 and $900 per person annually because of global warming. "We're likely at this inflection point where costs are going to start growing more rapidly," Knittel said. "The observed costs have been fairly linear so far. Going forward, that's going to start increasing at an increasing rate."

The future of commerce won't be driven by better filters or keywords, said professor Vivek Farias. It will be driven by agents trained on large language models to reason, recall and recommend.

Senior lecturer Robert C. Pozen wrote: "Since returning to the presidency, Donald Trump has governed with the same volatility that defined his first term — but now with a new tool in hand: federal ownership stakes in private companies. This unprecedented economic power grab, coupled with opaque decision-making and conflicts of interest, has created a climate of instability for investors and companies."