Featured Post from University of Rochester

Weird and complex life emerged on Earth as the planet's magnetic field gave way

The Earth’s magnetic field protects life, but an ancient phase when it nearly collapsed coincided with a key step in evolution, says University of Rochester geophysicist John A. Tarduno.

Apr 8, 2025

1 min

The Earth’s magnetic field plays a key role in making the planet habitable. It shields lifeforms from harmful solar and cosmic radiation. It helps limit erosion of the atmosphere and keeps water from escaping into space.

But new data show a prolonged near collapse of Earth’s magnetic field that took place some 575-565 million years ago coincided with the blossoming of macroscopic complex animal life.

We now face the possibility of a new, unexpected twist in how life might relate to the magnetic field, says John A. Tarduno, the William R. Kenan Professor of Geophysics and the dean of research at the School of Arts and Sciences and the Hajim School of Engineering and Applied Sciences at the University of Rochester.

“That twist could reach deep into Earth’s inner core,” says Tarduno, who recently wrote about the findings for Physics Today magazine.

Tarduno is frequently cited by news outlets, like CNN, The Washington Post, and Smithsonian magazine, on matters related to the Earth’s inner core, or dynamo, and magnetic field. He can be reached at john.tarduno@rochester.edu.

Find Experts

Mar 26, 2026

1 min

Target Can’t Seem to Escape the Crosshairs

The on-again-off-again nationwide boycott of Target has the retailer’s new chief executive, Michael Fiddelke, officer facing relentless pressure from activists on both sides of the issue. David Primo, a professor of political science and business administration at the University of Rochester, says Fiddelke can’t seem to move Target from the crosshairs despite slashing prices on thousands of products and investing in stores, workers, and technology. “Target remains a battleground for activists on the left and the right, and its new CEO hasn’t yet figured out how to extricate the company from this role,” Primo recently told USA Today. “Fiddelke already faces a huge challenge in turning around a company with significant operational issues. This certainly doesn’t help matters.” Target has reported 13 straight quarters of sluggish sales. Company officials have admitted that shopper anger has contributed. Activists in Minneapolis, where Target is based, organized a nationwide boycott last year over the company’s rollback of diversity, equity, and inclusion policies. From church pulpits to community gatherings, the policy about-face was widely viewed as a betrayal of Black Americans who had propped up the retail giant’s bottom line. Primo studies corporate political strategies, among other areas, and regularly shares his insights with business journalists and political reporters. His essays have appeared in The New York Times and The Wall Street Journal, and he’s been interviewed by many radio and television outlets, including Bloomberg and National Public Radio. Contact him by clicking on his profile.

Feb 25, 2026

1 min

The truth behind federal disclosure of alien life

With the recent presidential comments on potential alien life, UFO enthusiasts have new hope that finally we’re going to get federal “disclosure” of UFOs, aliens and the great government conspiracy surrounding both. But, as a scientist who studies the search for life in the Universe, the question I have is much simpler: What would disclosure really need to disclose? What is required for actual, factual proof that aliens exist and they’ve been visiting Earth? We’ve already had three years of Congressional hearings on UFOs that have produced zero proof of anything. What we need now is simple: hard physical evidence. That is what disclosure needs to deliver. Not stories about alien spaceships being held by the government, but the actual spaceships themselves. Not stories about alien bodies but the actual icky, gooey bodies with their icky gooey tentacles. If disclosure provides physical evidence that independent laboratories and independent scientists all over the world can verify, then it will live up to its hype. That would make “Disclosure Day” truly history-making.

Feb 13, 2026

1 min

Parents — Stop Trying to Be Your Teen's BFF

As teenagers push for independence, many parents respond by trying to become their friends and confidants. University of Rochester psychologist Judi Smetana says blurring the line between warmth and authority can backfire. “It’s great if kids want to disclose to you,” Smetana explains. “But it would be weird for parents to talk about their private lives with their kids. When parents start revealing things about themselves, it’s slippery. Your child should not be your confidant.” Smetana, an expert in adolescent development and parent-teen relationships, emphasizes that closeness and trust are essential — but they are not the same as “friendship.” Teenagers need structure, limits, and clear boundaries as they test autonomy. When parents overshare they risk shifting roles in ways that reduce parental influence. That doesn’t mean parent-child relationships remain rigid forever. The dynamics naturally evolve as children mature into early adulthood. “Let the child take the lead,” Smetana says. “There may show a willingness to become more like friends when parents don’t have the same authority. But there will still be some boundaries.” Her research underscores that healthy parent-teen relationships balance openness with guidance. Trust grows not from collapsing boundaries, but from maintaining them with consistency and care. For reporters covering parenting and adolescent behavior, Smetana is available to discuss: • Healthy boundaries in parent-teen relationships • Oversharing and role confusion in families • Adolescent autonomy and authority • How parent-child dynamics shift in early adulthood Click her profile to connect with her.