Science Vs

Dr. Santiago González, a toxicologist and immunologist who studies tattoo ink and immune reactions, joins the conversation. He talks about how ink can travel to lymph nodes and trigger short‑term inflammation and a lingering immune marker. The discussion covers worries about black ink chemicals, links to cancer in population studies, and risks from laser removal.

Can boredom really recharge your brain and boost creativity? This dives into what boredom looks like in the brain, why it feels so uncomfortable, and why some people would rather zap themselves than sit alone with it. It also explores mind-wandering, mixed creativity experiments, memory and rest, and the difference between boredom and quiet disconnection.

A flashy cancer scare around vaping kicks off a deep dive into disputed science and why researchers are fighting over the evidence. It explores whether vaping is really as dangerous as smoking, whether it actually helps people quit, why many people stay hooked, and how tobacco money may be muddying the picture.

They dig into why runners get injured and which body parts are most at risk. They explain a safe ramp-up rule and how glute strength cuts injury risk. They examine whether small amounts of running add years to your life and whether extreme mileage can harm the heart. They explore runner’s high and the brain chemicals that might create it.

Angel Abud-Madrid, engineer and director of the Center for Space Resources, explains lunar resource prospects and in-situ resource use. He discusses whether rare earths or helium-3 make mining worthwhile. He also explores the Moon as a training ground for Mars, and the science of far-side radio telescopes probing the universe’s early history.

They dig into why endless scrolling and algorithms keep us hooked. Researchers test strong lockouts, nudges, friction tricks and a surprising grayscale hack. The show compares what actually reduces phone time and discusses whether cutting screen use improves wellbeing.

Mary Roach, best-selling science writer known for probing quirky, taboo human biology, joins to explore sex research history and oddball methods. Short, lively segments cover the female orgasm and the 'upsuck' idea, bizarre lab tools and pioneers' techniques, pig insemination practices in Denmark, and jaw-dropping ultrasound discoveries like a masturbating fetus.

Becca Lynch, a young patient who faced early-onset colorectal cancer, shares her first-person diagnosis and treatment story. The conversation covers rising rates of colorectal cancer in people under 50. Listeners learn which stool and symptom changes to watch for. Scientists discuss microbial and environmental leads, including a bacterial DNA fingerprint linked to early cases.

Barry Komisorak, a neuroscience researcher who studies nipple and genital brain responses, and Alia Macrina Heise, a lactation specialist who named D-MER, explain a strange sinking, homesick feeling tied to nipple stimulation. They dive into neural imaging, milk letdown mechanics, hormones like oxytocin and dopamine, and practical ways people cope with this baffling sensory-emotional reaction.

Joel Werner, a science journalist and commentator, helps unravel a shocking 1988 medical case. He walks through how pregnancy was possible without a vaginal opening. The discussion covers vaginal agenesis, surprising routes sperm might take, and the medical detective work that followed.