This week, Katie, Adam and Rebecca take us back in time to discuss the history of sword fighting, fossilized feces, and an ancient blue dye.

Carmen, Katie and Nicole discuss immunity in both plants and pregnant organisms and the importance of animal models in scientific research.

Amanda, Kristen, and Nora tell us about Antarctica's tropical past, a COVID-19-related reduction in seismic activity, and translating brain activity into language

Katie gathers some of our favorite stories about a dancing parrot named Snowball, the time known as Snowball Earth, and a unique chemical property of limoncello

Nora, Kristen, and Carmen discuss facial recognition in babies, the importance of the transverse arch in foot stability, and the various detection methods currently in development for Alzheimer's disease.

Rebecca, Adam, and David discuss dogs that can sense thermal radiation, the evolution of rats in New York City, and an update on what we know about the SARS-CoV-2 virus.

Kristen, Courtney, and Nicole discuss the short-lived killifish, how whale migrations can be disturbed, and how the late NASA mathematician Katherine Johnson broke barriers.

Katie, Abhijit, and Nora discuss the positive impact of flu vaccines on cancer patients, the retirement of NASA's Spitzer space telescope, and the costs and benefits of Medicare-for-All in the US.

Carmen, Kristen, and David talk about dating human artifacts, mutations in lung cells, and unusual viruses.

Adam, Rebecca, and Amanda talk about mice's reaction to pheromones, how sign languages evolved all around the world, and new methods of preserving the honey bee population.