Where Did Curly Hair Come From? Biological An...

In this episode of Science Quickly, one of SciAm’s Young American Scientists, biologist Jaye Gardiner, explores how common viral infections may raise cancer risk—not just through genetic mutations but by reshaping the body’s “extracellular matrix” of molecules that support cells ...  Show more

In this episode, host Rachel Feltman interviews neuroscientist Kauê M. Costa, who is among Scientific American’s inaugural cohort of Young American Scientists honorees. Costa shares how being surprised by experiments has led him to new ways of thinking about learning in the brain ...  Show more

It’s fairly strange that humans, unlike many other mammals, don’t have hair all over. Our lack of body hair and wide geographic distribution led to the variation of sun-protective melanin in our skin. For the hair that remains, why did some groups develop curls while others did n ...  Show more

Why do humans have most of our hair on our heads, not our bodies? Why do we have so many varieties of hair color, thickness, and curliness? Dr. Tina Lasisi is a biological anthropologist whose work explores these evolutionary mysteries. In this episode, she shares her research in ...  Show more

It’s easy to feel overwhelmed with the news these days and to fear for the future. What if you could interrupt doomscrolling and contribute to conservation at the same time? That’s the idea behind programs like Adventure Scientists, eBird and iNaturalist. Guest Gregg Treinish, fo ...  Show more

Mitochondria are known as the powerhouse of the cell—but new research suggests they might be far more complex. Columbia University’s Martin Picard joins Scientific American’s Rachel Feltman to explore how these tiny organelles could be communicating and what that might mean for e ...  Show more