BALTIMORE, MD, May 13, 2025 – As communities across the United States continue to confront the devastating toll of mass shootings, new research reveals a staggering economic dimension to these tragedies. A study published in the INFORMS journal Marketing Science finds that mass shootings cause an estimated $27 billion in annual lost revenue for U.S. retailers driven by sharp declines in foot traffic, reduced transaction volume and long-term store closures.
BALTIMORE, MD, May 13, 2025 – Researchers who took a close look at loosened concealed carry laws between 2010 and 2017 have found that “Shall Issue” regulations, which remove local authority discretion on the issuance of concealed carry gun permits, contribute to a significant increase in handgun purchases. At the same time, the researchers found that in states that adopted “Permitless Carry” policies, there was no noticeable change in gun purchases.
The time has come: REAL ID will finally be implemented in less than one week, about 20 years after it was initially proposed.
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As you have probably noticed, Malaysia is under a movement control order (MCO) right now, which is basically an order for most people to stay at home and avoid unnecessary contact with other people.
The World Health Organization on Wednesday said that the US could become the new center of the coronavirus pandemic, a prediction that every day looks closer to coming true. As of Thursday, the US was only 6,219 infections behind China’s total: China had reported 81,285 infections, while the US had 75,066.
It’s not a matter of if, but when.
That’s what disease experts are saying about a second wave of coronavirus cases, even as governments and health systems across this country are overwhelmed by a still-rising first wave of patients requiring hospital care. But the likelihood is getting more attention across the world, as other countries that are further along in their disease progression start to see the end of their initial wave of Covid-19 cases and, along with low numbers, begin loosening restrictions on movement and gatherings.
The COVID-19 pandemic has brought medical supply chains into the spotlight. There has been a national shortage of testing kits, and at least one drug is already unavailable because of the outbreak, though it hasn’t been publicly named.
The COVID-19 crisis may be unfolding on an unprecedented scale, but to U-M engineering associate professor Siqian Shen, its web of logistical puzzles seems eerily familiar. Where to put testing centers, which public facilities to close, and how to allocate ICU beds and design medical triage processes are the kinds of problems that industrial operations researchers like her have been solving for decades. She believes models that are saving businesses money today could be used to save lives tomorrow.
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