On this week’s show, freelance writer Christa Lesté-Lasserre talks with host Sarah Crespi about the scientists working on the restoration of Notre Dame, from testing the changing weight of wet limestone, to how to remove lead contamination from four-story stained glass windows.
As the emergency phase of work winds down, scientists are also starting to use the lull in tourist activity to investigate the mysteries of the cathedral’s construction.
Also this week, Felipe Quiroz, an assistant professor in the biomedical engineering department at the Georgia Institute of Technology and Emory University, talks with Sarah about his paper on the cellular mechanism of liquid-liquid phase separation in the formation of the tough outer layer of the skin. Liquid-liquid phase separation is when two liquids “demix,” or separate, like oil and water. In cells, this process created membraneless organelles that are just now starting to be understood. In this work, Quiroz and colleagues create a sensor for phase separation in the cell that works in living tissue, and show how phase separation is tied to the formation of the outer layers of skin in mice.
Hear the latest science news, brought to you by Shamini Bundell and Nick Howe. This week, a newly discovered bird species from the time of the dinosaurs, and microbes hundreds of metres below the ocean floor.
The National Park Service spans hundreds of sites across the US, including monuments, seashores, memorials and parks. Brian Kelley and Jesse Reed survey the design history of the agency’s visual identity.
This book brings togethere a collection of over 400 maps produced by the United States National Park Service from 1910 to today. Photographer Brian Kelley has impulsively archived the rarely seen treasures over the past three years, uncovering a design portfolio with little to no credit to their respective designers. The growing collection displays a progressive design approach, from more typographic-driven covers, to the proliferation of duotone print production, culminating in the Unigrid system developed by Italian designer Massimo Vignelli in the 1970s.
Rocket scientist-turned-immunology expert Mark Kendall talks about his Nanopatch, which could revolutionise vaccinations and eradicate some diseases.
Listen to the latest from the world of science, with Benjamin Thompson and Nick Howe. This week, improving computers’ image identification, and a new method for growing crystals.
What was the world like from 500 to 1500 CE? This period, often called medieval or the Middle Ages in European history, saw the rise and fall of empires and the expansion of cross-cultural exchange. 
Drug Pricing Theme Issue: Is Pharma Earning Too Much?, R&D Costs Required to Bring a New Drug to Market, Probiotic Safety, and more
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