How we measure the world with our bodies, and hunting critical minerals

<p><em>Body-based units of measure in cultural evolution, and how the geologic history of the United States can be used to find vital minerals</em></p> <p> </p> <p>First up this week, we hear about the <a href="https://www.science.org/doi/10.1126/science.adf1936">advantages of using the body to measure the world</a> around you. Producer Meagan Cantwell talks with <a href="https://www.roopekaaronen.com/">Roope Kaaronen</a>, a postdoctoral researcher at the University of Helsinki, about how and why cultures use body-based measurements, such as arm lengths and hand spans. Read the <a href="https://www.science.org/doi/10.1126/science.adi2352">related commentary</a>.</p> <p> </p> <p>Also on this week’s show, the United States starts a big hunt for useful minerals. Staff Writer Paul Voosen joins me to discuss the country’s <a href="https://www.science.org/content/article/major-us-geological-survey-aims-uncover-minerals-critical-batteries-microchips">Earth MRI project</a>, which seeks to locate rare earth elements and other minerals critical to sustainable energy and technology within its borders.</p> <p> </p> <p>This week’s episode was produced with help from <a href="https://podigy.co/">Podigy</a>.</p> <p> </p> <p><a href="https://www.science.org/content/page/about-science-podcast">About the <em>Science</em> Podcast</a></p> <p> </p> <p>Authors: Sarah Crespi; Meagan Cantwell; Paul Voosen</p> <p> </p> <p>Episode page: <a href="https://www.science.org/doi/10.1126/science.adi9883">https://www.science.org/doi/10.1126/science.adi9883</a></p><p>See <a href="https://omnystudio.com/listener">omnystudio.com/listener</a> for privacy information.</p>