
The Pulse
Go on an adventure into unexpected corners of the health and science world each week with award-winning host Maiken Scott. The Pulse takes you behind the doors of operating rooms, into the lab with some of the world's foremost scientists, and back in time to explore life-changing innovations. The Pulse delivers stories in ways that matter to you, and answers questions you never knew you had.
Latest episodes

Jul 3, 2025 • 49min
The Big Chill and the Future of Refrigeration
We’ve only been able to harness the cold for our benefit for a little over 100 years, but innovations like refrigeration and air conditioning have completely transformed the way we live and eat. But it all comes at a cost — and not just financially. On this encore episode, how advances in cold technology have shaped our lives and changed the world.

Jun 26, 2025 • 50min
Inside the Dramatic Race to Decode the Human Genome
Twenty-five years ago, President Bill Clinton announced a historic achievement: The completion of the first-ever survey of the human genome. The ceremony focused on the power of unity and collaboration — but, behind the scenes, the journey to this generational discovery had been marked by a bitter, cut-throat competition. We look back at the race to decode the human genome — and who really won.

Jun 19, 2025 • 50min
Why Friends Are Good for Your Brain
Friends make us laugh, they have our back, we share memories and stories. Beyond that, scientists are learning that friendships are key in keeping us healthy and thriving. On this episode, we explore why researchers say our brains are wired for connection, and why making our friendships a priority is one of the key pillars of longevity. We’ll get some research-backed advice on making new friends as adults and hear from two friends who love spending time with each other, though they usually can’t remember their adventures.

Jun 12, 2025 • 50min
Why We’re Hardwired for Revenge
When someone wrongs us, getting revenge can feel like the only right move — the only way for us to balance the scales, to set the world right again. But the consequences can be disastrous, especially when payback becomes an all-consuming obsession. On this episode, we talk with lawyer-turned-researcher James Kimmel about his new book, "The Science of Revenge: Understanding the World's Deadliest Addiction — and How to Overcome It." We discuss the evolutionary roots of revenge, the neuroscience behind why it feels so good, and how Kimmel eventually traded vengeance for forgiveness. We also find out what caused a murder of crows to target an unsuspecting woman, and what was behind their years-long grudge.

Jun 5, 2025 • 49min
Exploring the Secrets of Human Creativity
Creativity plays a role in every facet of our lives, from childhood education, to everyday problem-solving, to the artistic works we enjoy and the innovations shaping our future. We explore what human creativity is, how it works, and some of the unexpected ways it’s remaking our world.

May 29, 2025 • 49min
Sharks — From Fear to Fascination
Before dinosaurs, before trees — even before Saturn had its rings – there were sharks. The fierce predators have been swimming in our oceans for hundreds of millions of years, standing the test of time as they survived all five of Earth's mass extinction events.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

May 22, 2025 • 49min
What It Takes to Prove the Truth
Kathy Sanders, a survivor of the Oklahoma City bombing who lost her grandsons, shares her 30-year quest for truth amidst deep grief. Reporter Grant Hill, who covered her story, discusses the lasting distrust in the federal investigation. Together, they unravel the chaotic aftermath of the bombing, highlighting the conflicting eyewitness accounts and the haunting uncertainties that persist. Their conversation emphasizes the complexities of seeking proof and accountability, and how personal narratives shape our understanding of truth.

May 15, 2025 • 54min
Cybercrime and How Hackers Prey on Human Nature
Cybercrime has been around for as long as computers have — but over the past 20 years, it's exploded into a global threat, with staggering financial, political, and even personal consequences. We hear about the virus that ushered in the age of social engineering attacks, the history of cybercrime, and what led one man to become a hacker.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

May 8, 2025 • 49min
Lightening the Load of Motherhood
We often hear about the joys of motherhood — the incomparable sense of love, the magic of watching your kids discover the world, and the fulfillment of seeing them grow. But motherhood can also be a grind. On this encore episode, we take a look at the experience of modern motherhood — the challenges, the sometimes impossible standards, and the strategies that help moms thrive.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

May 1, 2025 • 52min
The Life-Changing Power of Lifting Weights
For a long time, weightlifting was relegated to the realm of muscle heads — but today, it's popular among people of all ages and fitness levels. On this episode, we explore the history of weightlifting, some of its unexpected health and cognitive benefits, and why one woman says it changed her relationship with her body.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy