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Expert Q&A

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Louisiana State University offers access to expert answers on timely questions and topics of interest. Our Expert Q&A highlights insights directly from experts, making it easier for media, event organizers, collaborators, and partners to discover authoritative perspectives that add clarity and context.
What impact will the ongoing conflict with Iran have on the U.S. Economy?
Rajesh P. Narayanan

"The conflict with Iran is already showing up at the gas pump, and how much worse it gets depends entirely on how long this lasts. The Strait of Hormuz carries about a fifth of the world’s oil, and it’s effectively shut down for most commercial shipping right now. For the average American, that means higher gas prices, higher grocery prices, and more uncertainty layered on top of an economy already strained by tariffs and inflation. Here in Louisiana, we’ll feel it quickly — our refineries process the majority of U.S. crude, so global price shocks hit home fast. The short-term pain is real. The question is whether this conflicts ends quickly or turns into a long term affair."

In light of the viral drunk raccoon... are raccoons becoming more domesticated?
Mark Mitchell

I would not say they are becoming more domesticated but instead that they are becoming more habituated, which reduces their fear level. Domestication requires a line of breeding that leads to the animals taking on certain characteristics. Raccoons are truly amazing animals that are highly adaptive and will take advantage of opportunities provided them. I have seen raccoons walk a suspended tight rope to get to food that was hung in a box 8 to 10 feet off the ground in a campground. They are truly masters at getting what they want.

How might the current economic climate affect consumer spending this holiday season?
Dan Rice

This is where we start to see the effects of what some might call a “two-tier economy.” The higher spending might be driven by the more affluent consumers who are more financially sound, while other data suggest that as many as 1 in 4 households are living paycheck to paycheck, making increased spending for them unlikely.We’re also seeing projections for certain demographic groups at much lower spend projections. Nearly 20% of the population intends to spend less, according to Visa. PWC is projecting spending declines of 5%, and GenZ responses indicate a 23% drop in planned spending.But there are many ways you split segments. People who are concerned about tariffs are planning to spend 10% less, according to PWC. People with kids will tend to spend more than last year, while people without kids will spend less than last year, according to NRF projections. So, it really does come down to individual-level financial and other factors. This may very much be a situation where the affluent drive the average numbers.

What do you expect for holiday shopping trends this year?
Dan Rice

Like most other years in recent history, most of the bodies forecasting holiday spending are predicting increases in total sales. The National Retail Federation (NRF) is predicting a growth rate of 4%, with sales totaling over $1 trillion. Other bodies like Simon Kucher, a pricing consultancy, project increases of over 7%, and Visa was projecting roughly 10% raises in gift spending. While these figures always vary between entities due to different specific formulas, it appears that some of the higher numbers were released earlier in the year, suggesting that later numbers may be reflecting a more up-to-date market forecast.Interestingly, this projected increase is happening despite many bodies, including the NRF, suggesting a decrease in planned per person spending. This suggests that the population growth of consumers might explain the increase in total sales for retailers, even if there’s a true decrease per person.We may also begin to see the impacts of tariffs on pricing in the holiday shopping season. This is supported by the Visa report, which suggests real spending growth of 2.2%, indicating that fewer items are being purchased despite revenue increases.

What is the likelihood that we will ever find that there was or is life on Mars?
Eric Burns

One of the grandest questions is whether or not we are alone in the universe. The ingredients for life appear to be ubiquitous, but how often that ultimately leads to life is unknown. Mars is one of the likeliest places for life to have existed, being the closest planet which was once habitable, including liquid water in the distant past. Further, if life existed then, its possible it still exists on Mars under the surface. Observations with past and current scientific experiments have hinted that life has or does exist on Mars. If the US decides to proceed with the Mars Sample Return mission, which will gather dust and rocks from Mars and bring them back to Earth for detailed study, we could prove life on Mars as early as 2040. I am one of a dozen or so scientists external to NASA brought in to consult on the design of the Habitable Worlds Observatory. This successor to Hubble is designed to seek signatures of life beyond our own, with a planned launch around 2040. Thus, NASA is seeking to answer the grand question "are we alone?" with every viable avenue.

How are human activities like levee building and damming changing the way the Mississippi River carries water and sediment, and what does that mean for Louisiana’s coast?
Kory Konsoer

To protect cities and communities along the Mississippi River, large levees were built along the lower reaches following the historic 1927 flood. These levees prevent overbank flooding but also cut off freshwater and sediment delivery to adjacent wetlands and floodplains, and instead funnel water and sediment directly into the Gulf of Mexico (Kesel, 1988). Historically, most of the sediment reaching the mouth of the Mississippi River was sourced from the Missouri Watershed and tributaries draining from the Rocky Mountains (Meade & Moody, 2010). However, beginning in the 1950s, extensive dam construction on the Missouri River and its major tributaries have resulted in large volumes of sediment being trapped, reducing the total sediment load reaching Louisiana’s delta plain from ~390 Mt y-1 (pre-dam conditions) to ~100 Mt y-1 (Kemp et al., 2016).The effects of substantially reduced sediment loads and restrictions to the exchange of freshwater and sediment between the river and deltaic wetlands have critically impacted Louisiana’s coast. Without the periodic input of river sediment to balance natural subsidence and sea-level rise, wetlands and barrier islands are rapidly eroding. Since the 1930s, nearly 5,000 km² of land has been lost, contributing to ecosystem degradation and greater vulnerability to hurricanes and storm surge (Couvillion et al., 2017).

The Fed just cut interest rates—what does that really mean for consumers, from mortgages to credit cards to savings?
Rajesh P. Narayanan

When the Fed announces a rate cut, consumers often expect interest rates on the financial products they use to go down as well, but it isn’t always that straightforward. Savings:With deposit products, high-yield savings rates are the ones most likely to be affected. Many account holders may have already seen their rates go down in anticipation of this rate cut. Others may have to wait for their financial institutions to lower rates. Because the Fed is expected to continue cutting this year and throughout 2026, savings rates might continue to drop. Certificate of deposit (CD) rates are also likely to go down now that the Fed has cut rates, more so for short-term CDs compared to long-term CDs. So, locking in a CD rate now might be a good idea if you’re worried about future Fed cuts. Home Borrowing Costs:You should see an almost immediate drop in Home Equity Line of Credit (Heloc) rates because these rates are variable and tied to an index, often the prime rate. The prime rate follows the federal-funds rate, which means that when the Fed cuts rates, HELOC borrowers on both new and existing loans typically benefit. Home equity loan rates however may not see much of an impact as these rates are fixed and the rate cut has largely already been priced in. With long term mortgages, their rates are benchmarked to the yield on the 10-year Treasury rate. Historically, changes in the Fed’s benchmark rate (which is the short-term, overnight rate) are barely correlated with long-term mortgage rates. What we have actually seen since the Fed started lowering rates is that mortgage rates have moved in the opposite direction. This is because the 10-year Treasury yields have risen over concerns about the economy, expanding deficits and trade wars.Credit cards:With credit cards, the rates may come down a bit, but not much to make a difference because the rates are still at historic highs. The Fed tends to cut rates when it is concerned about the economy, which means borrowers may find it harder to repay, and banks price that risk in the way they price their credit cards.

With interest rates, inflation, and banking stability in the headlines, what signals should everyday people watch to understand where the financial system is headed?
Rajesh P. Narayanan

The financial system, which is comprised of financial institutions (banks) and financial markets, moves the savings in the economy to investments via credit and capital flows. Both credit and capital markets provide leading indicators of where the economy is headed. Banks create credit, and therefore people should look for signs that indicate when banks become more cautious about lending or when they see headlines about banks stress. This means that credit will become harder to get, which can slow the economy even if other indicators look healthy. They can also look for signs from the financial market. When the term spread, which is the difference between long and short- term rates is positive, it typically signals expectation of economic growth and higher future rates. When it is negative or inverted, it signals expectations of slower growth or even a recession as markets anticipate future rate cuts.

Does player position in football influence risk of injury?
Xavier Thompson

Player position matters. Lineman absorb many lower-speed, repeated hits, which makes them more prone to bumps and bruises, but as they get older we start to see more shoulder and knee injuries. Skill players take higher-speed open-field collisions, which raises their risk for sprains and strains. As players get older, they get bigger, stronger, and faster so the same plays carry more injury risk. Concussions can affect any position and don’t always require a direct hit to the head; force from a body blow can be transmitted upward and still cause brain injury. Concussions are among the hardest injuries to diagnose, because signs and symptoms may vary and you cannot see a concussion on traditional imaging (X-ray, CT, MRI). The consequences of another hit to the head while someone has a concussion are extremely serious so the rule of thumb is "when in doubt, sit them out."

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