NSF’s Discovery Files Podcast

The Sun and Eclipses

Eclipses have captured the imagination throughout history. Carrie Black, a program director in the Division of Astronomical Sciences at the U.S. National Science Foundation who oversees operations of the National Solar Observatory, joins us to discuss eclipse phenomena and share facts about the sun and how we use tools such as the Daniel K. Inouye Solar Telescope to observe it.

Experimenting with Antimatter

Timothy Tharp, assistant professor at Marquette University; Danielle Hodgkinson, postdoctoral fellow at University of California, Berkeley; and Andrew Christensen a senior graduate student at UC Berkeley all contributed to the success of the Alpha-g experiment at the European Organization for Nuclear Research (CERN), testing gravity's effect on antimatter. We'll hear about what roles they played, challenges they faced and what's next for the group.

Breakthrough: Gravity’s Effect on Antimatter

The Antihydrogen Laser Physics Apparatus (ALPHA) collaboration is an international group working with antihydrogen atoms at the European Organization for Nuclear Research (CERN), to understand the fundamental symmetries between matter and antimatter. We are joined by professors Joel Fajans and Jonathan Wurtele, NSF-supported researchers at the University of California, Berkeley, to announce the breakthrough results of an experiment looking to understand gravity's effect on antimatter.

Antimatter Explained

Ahead of a special announcement coming later this week, Kevin M. Jones, the William Edward McElfresh Professor of Physics Emeritus at Williams College and a program manager in the Division of Physics at the U.S. National Science Foundation joins to explain what antimatter is, what happens when it comes into contact with other matter, and why you might win a Nobel Prize if you could figure out why it’s so rare.

Cattle in the Americas

In the United States there are over 95 million heads of cattle, but their known history stretches beyond the farms and cowboys of the Wild West back into the galleons of Spanish colonists. Nicolas Delsol, a postdoctoral associate at the Florida Museum of Natural History joins to explain how he traced their arrival in the Americas.

Secrets of the Storm

Airborne Phased Array Radar will provide a generational leap in severe storm and climate research. Wen-Chau Lee, APAR chief scientist and senior scientist at National Center for Atmospheric Research Earth Observing Laboratory, joins to discuss radar use in storms, improving modeling and why sometimes it’s better to collect data from inside of a storm.

Impacts in Sports

After an incident as a young water polo player, Nicholas Cecchi began investigating brain injury. We’ll hear about how an early study resulted in a rule change, approaches to analyzing the severity of hits and impacts in sports, and how he used an NSF Graduate Research Fellowship to develop liquid shock absorbers for football helmets in the Camarillo Lab at Stanford University.

Shape of Lithium

Yuzhang Li, assistant professor in chemical and biomolecular engineering at UCLA, is working to create the next generation of batteries. We'll learn about why lithium is volatile and how knowing the true shape of lithium will impact the development of safer and more powerful batteries.  

Revealing Cryptofauna

Cryptofauna are creatures that live hidden among microhabitats. Our guest is Paul Sikkel, a research professor at the University of Miami’s Rosenstiel School of Marine, Atmospheric and Earth Science who has discovered two species of Gnathiid isopods. We’ll hear about these creatures' life cycles, their role in the marine food web, and why Sikkel named them after musicians Bob Marley and Jimmy Buffett.

Forests in a Changing Climate

William Anderegg, director of the Wilkes Center for Climate Science & Policy and associate professor in The University of Utah School of Biological Sciences, joins to discuss how forest ecosystems are reacting to climate change. He is a 2023 recipient of the Alan T. Waterman Award, the nation's highest honor for early-career scientists and engineers.