Featured Post from University of Delaware

Specialized brain imaging tracks hormone-driven changes

UD researchers use specialized imaging to detect hormone-driven brain changes, opening new avenues for understanding menopause and brain health.

Aug 27, 2026

2 min

A new study out of the University of Delaware shows that fluctuations in estrogen influence the brain, helping reshape connections between neurons. Researchers showed that a specialized imaging technique called magnetic resonance elastography (MRE) can detect estrogen-dependent mechanical changes in the hippocampus, a brain region involved in memory and learning, across the reproductive cycle.

The findings, published in Brain Communications, lay the groundwork for future studies exploring how hormonal changes, including long-term transitions like menopause, affect brain health in women.

“Across the reproductive cycle, the brain adapts, relying more heavily on different regions at different times. This was step one: can we track these changes with MRE in rats, and then eventually in humans?” said first author Katrina Milbocker, a postdoctoral researcher in Curtis Johnson’s laboratory and a UD alumna with a doctorate in behavioral neuroscience.

“Imaging is often viewed as a tool for detecting disease, but it can also help us understand brain health dynamically,” said Johnson, an associate professor of biomedical engineering. “Our ultimate goal is to understand how brain mechanics change across life stages and what those changes can tell us about health and aging.”

Toward clinical translation

While the study links hormone fluctuations to changes in hippocampal mechanics, the question of whether those changes influence brain function remains. A key next step is connecting MRE measurements with cognition, including memory and learning.

Johnson’s team is also extending the work into rat models of menopause, a life stage in which the body produces much lower levels of estrogen. “We suspect there may be a mechanical ‘stuck state’ when estrogen is first depleted, contributing to disrupted cognitive function like brain fog, and we are trying to test this next,” he said.

At the same time, the team is working to translate the findings to humans through parallel rodent and human studies.

“One unique advantage at UD is that the human and animal imaging facilities are in the same building, which makes collaboration easier,” Milbocker said.

Ultimately, they hope to make MRE fast enough to be incorporated into routine MRI exams, ideally adding less than a minute to a standard scan.

“Transitions such as menopause span years, and we want to understand how brain health changes across them and how to support individuals during those periods,” Johnson said.

To speak with Milbocker or Johnson, email mediarelations@udel.edu.

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Political coverage often centers on the president, but according to the University of Delaware’s Dannagal Young, journalists can sometimes provide more meaningful coverage by focusing more on democracy and less on the commander in chief’s every movement. Young calls this approach “democracy-centered reporting.” Instead of treating every presidential announcement or provocative statement as the central event, democracy-centered reporting asks how political actions affect democratic institutions, constitutional principles and Americans’ ability to exercise their rights as citizens, Young says. Young, professor of communication and director of UD’s Center for Political Communication, says “access journalism” has an important role, but an overreliance on access can also make political leaders the organizing principle of coverage. In moments when executive power is expanding, she argues, journalists should consider whether their coverage is inadvertently amplifying the power they are trying to scrutinize. Young can discuss: • How journalists can cover presidents without making the president the center of every story • The benefits and risks of access journalism • How coverage of political conflict affects public understanding of democracy To arrange an interview with Young, visit her profile and click on the "contact" button. Interested reporters can also send an email to MediaRelations@udel.edu.

Sep 24, 2026

1 min

Public health risks after a major flood

Floodwaters may recede quickly, but the health consequences of a major disaster can last for months or even years, says University of Delaware epidemiologist Jennifer Horney. Horney, an expert in disaster recovery and public health, can discuss the longer-term health challenges communities face after major flooding events, including the Aug. 26 flash floods in Nepal that resulted in 1,450 deaths, with 6,000 people still missing. Horney can talk about: • How damage to health infrastructure can make it more difficult for people to access medical care after a disaster, and what communities can do to prepare for and reduce longer-term health consequences following flooding and other disasters. • How contaminated water and food can increase the risk of infectious disease, and how standing water left behind by floods can create breeding grounds for mosquitoes that transmit diseases such as dengue, malaria, encephalitis and chikungunya. • The impact disasters have on physical and mental health well after the immediate emergency has passed. To arrange an interview, visit Horney's profile and click on the contact button. Interested reporters can also send an email to MediaRelations@udel.edu.

Sep 18, 2026

3 min

Is AI ethical? One philosophy professor has an answer.

During a snowstorm last winter, University of Delaware philosophy professor Thomas Powers fixed his own thermostat by typing the error codes into ChatGPT and following the instructions it provided. As he discovered on that cold, snowy night, AI can make DIY projects that much easier, potentially saving time and money. Ever the philosopher, Powers wondered about the ethics of his solution: What is the impact of taking the repair job away from someone who relies on the work? What about the risk of being wrong? Is the environmental impact of using AI worth the result? After 20 years in the Department of Philosophy and as director of the Center for Science, Ethics and Public Policy, Powers is uniquely suited to explore questions about the ethics of AI. What does “ethical AI” mean? POWERS: We want AI systems that are helpful and useful, but also safe. We want systems that don’t produce biased or dangerous results. One approach to achieve that, which I’m hopeful about, is to create systems that are “safe by design” or “ethical by design.” In other words, instead of relying entirely on outside regulation to prevent harmful behavior, we try to design the systems themselves so that they behave in ways we consider ethical. Is it possible to make an AI system truly “safe by design” if it eventually becomes capable of acting in ways its creators didn’t anticipate? POWERS: There is a big difference between most technologies and AI. With the latter, especially current large language models (LLMs), it appears that there is some unpredictability in their behaviors. Thus, their apparent autonomy complicates the "safe by design" motto. AI autonomy introduces the need for "guardrails" that constrain what AIs can do. But even this may not be possible. Why are AI companies hiring philosophers, and what does this mean for the field of philosophy? POWERS: Some of the hardest questions in AI aren’t purely technical questions. To build systems that are safe, fair or aligned with human values, you first have to decide what those concepts actually mean and how they can be translated into something a computer system can use. The challenge is to educate people who can move between those worlds — who understand the technology but can also ask the deeper questions about what we should want that technology to do. How has AI changed philosophy? POWERS: Philosophers have long discussed the philosophy of action with the concept of agency. For decades we assumed that an agent must be human — someone who acts on their own behalf, or on the behalf of another person, with some kind of plan or attitude. This concept transfers to discussions about AI, and whether it can be considered an agent and be responsible for its actions. The next step is to ask harder questions: Are autonomous AI agents responsible, in some sense, for what they do, and does this suggest or imply that they are conscious? I don’t think AI will become conscious any time soon, but I don’t think it is impossible, and other philosophers and scientists are broaching the question. To speak with Powers further about the philosophy of AI, reach out mediarelations@udel.edu. ABOUT THOMAS POWERS Thomas M. Powers, Ph.D., is an associate professor in the Department of Philosophy at the University of Delaware. He is also the director of the Center for Science, Ethics & Public Policy at UD. Powers' current research focuses on the ethics of information technology and the philosophy of technology. He contributes to scholarship on rule-based conceptions of machine ethics, computer agency, the ethics of artificial intelligence, and other philosophical issues involving emerging technologies, including human-robot interaction.

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