Christopher S. Tang

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Surge pricing is unpopular with consumers and drivers alike, but there are ways to reduce its inherent inefficiencies. charlesdeluvio on Unsplash

Surge pricing is broken – but there’s a smarter way to match gig workers with consumers

Christopher S. Tang, University of California, Los Angeles; David Dobrzykowski, Auburn University, and Nicolo Masorgo, Miami University

Rather than chasing dollars, gig workers are micro-entrepreneurs who perform a strict ‘mental audit’ of every single task to see if it’s worth their time.
Legos are designed to last for decades. That posed a challenge when the toymaker tried to switch to recycled plastics. AP Photo/Shizuo Kambayashi

Lego’s ESG dilemma: Why an abandoned plan to use recycled plastic bottles is a wake‑up call for supply chain sustainability

Tinglong Dai, Johns Hopkins University; Christopher S. Tang, University of California, Los Angeles, and Hau L. Lee, Stanford University

Corporate supply chains are riddled with high, uncounted emissions, as Lego discovered. New regulations mean more companies will face tough, sometimes surprising, choices.
Automaker GMC shows off its Hummer EVs at a plant in Detroit. Nic Antaya/Getty Images

Making EVs without China’s supply chain is hard, but not impossible – 3 supply chain experts outline a strategy

Ho-Yin Mak, Georgetown University; Christopher S. Tang, University of California, Los Angeles, and Tinglong Dai, Johns Hopkins University

China controls much of the global EV supply chain, but electric vehicles that use its parts and minerals won’t qualify for new US EV tax credits. Can America build its own supply chain?
Environmental, social and governance problems in a company’s supply chain can be hard for investors to track. KDP via Getty Images

ESG investing has a blind spot that puts the $35 trillion industry’s sustainability promises in doubt: Supply chains

Tinglong Dai, Johns Hopkins University and Christopher S. Tang, University of California, Los Angeles

Two supply chain experts see a major flaw in how ratings agencies measure companies’ environmental, social and governance performance.
The concern is about more than one shot vs. two. Michael Ciaglo/Getty Images

Backlash against Johnson & Johnson’s COVID‑19 vaccine is real and risky – here’s how to make its rollout a success

Tinglong Dai, Johns Hopkins University; Christopher S. Tang, University of California, Los Angeles, and Ho-Yin Mak, University of Oxford

Religious opposition over a link to abortions performed decades ago and misunderstandings about effectiveness could lead to a nightmare of angry patients and wasted vaccine.

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