When Alexander Graham Bell made the first-ever phone call on March 10, 1876, he never could have dreamed how the telephone would evolve — not to mention the many ways it would end up changing the way we live, work, and communicate.

This week, on the 150th anniversary of that first call, we take a look back at the history of the phone, and how it transformed America. We hear about the dramatic race to invent the telephone — and why some people questions whether Alexander Graham Bell deserves all of the credit learn about early cultural debates over everything from how phones should be used, to the etiquette of picking up calls; and explore recent trends in usage, from a growing movement to buy kids landlines, to telephobia — a fear of making calls.

Do animals feel love, anger, or empathy? Researchers have long dismissed such ideas as anthropomorphism, arguing that attributing human emotions to animals was unscientific.

But as we learn more about animal sentience, that’s starting to change — and, in the process, we’re learning more than ever about the complex inner lives of animals, including why we may be more alike than we once thought.

On this episode, we explore what researchers have discovered about what’s really going on inside other species’ heads. We talk with a primatologist about why she believes baboons and other animals possess a theory of mind; investigate whether crabs, lobsters, and shrimp are capable of experiencing pain; and hear about one beagle’s journey from lab subject to pet.

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 encore episode, we talk with lawyer-turned-researcher James Kimmel about his 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.

Artificial Intelligence is already guiding surgeons in operating rooms; it’s used to read image scans or take notes during your doctor’s visit. And the pace of AI integration is only getting faster. So what will health care look like in the next 10 to 20 years? Will we consult with an AI-powered doctor before we see our primary care physician or a specialist? Will it give more patients access to cutting-edge care? On this episode; a conversation with physician Robert Wachter on the future of medicine. He’s the chair of the Department of Medicine at the University of California, San Francisco and author of “A Giant Leap: How AI Is Transforming Healthcare and What That Means for Our Future." 

For those deep in the dating trenches, love and attraction can feel like uncrackable riddles. How do I make myself attractive to others? How do you know if someone’s into you? What should I look for in a partner — and how do I know if I’ve found “the one”?

On this episode, we train a scientific lens on the mysteries of love. We talk with psychologist Paul Eastwick about the latest research on attraction, relationships, and finding love; learn about how dating apps are transforming the courting process; and hear about two couples who found love in unexpected places.

When it comes to serious health issues like obesity, heart disease, and cancer, Black Americans have higher rates and worse outcomes than most other groups in the U.S. It’s a problem that’s gained growing attention over the past few decades, as public health experts have worked to untangle the causes of these disparities, and to find ways of mitigating their effects. Now those efforts face serious headwinds, with federal funding cuts and pressure against DEI measures threatening to roll back progress. But in the face of these challenges, providers are doubling down on offering care that builds trust and delivers better outcomes. On this special production of The Pulse, we find out what that work looks like on the ground. From becoming an ally to patients to mentoring the next generation of Black physicians, we’ll hear how providers are expanding access to quality care. We’ll also explore how the birth of Medicare led to the desegregation of hospitals.

At the best of times, alcohol makes us feel great — relaxed and gregarious, warm and fuzzy, happy and confident. But at the worst of times, it can morph into a serious problem, damaging our relationships, our health, and our lives as a whole.

As we close out Dry January, a popular movement to abstain from drinking for a month, we explore our relationship with alcohol. Why we consume it, how it affects us, and when it’s time to quit.

We talk with surgeon and recovering alcoholic Charles Knowles about how booze affects our brains and health, and what finally pushed him to go sober for good; we hear about a trend known as “California sober,” and why so many people are embracing it; and we find out how zero-proof cocktail bars are helping some people socialize while sober.

On January 28, 1986, a frigid cold day with an icy blue sky, the Space Shuttle Challenger exploded just 73 seconds after launching from Cape Canaveral, Florida. The accident killed all seven crew members aboard and was the first fatal in-flight spacecraft disaster in NASA's history. For many, the explosion came as an absolute shock. Millions of people were watching live, including school children who were especially eager to catch a glimpse of Christa McAuliffe, a teacher from New Hampshire and the first civilian in space. On this episode, we remember the Challenger tragedy with author Adam Higginbotham who details what went wrong and the aftermath in his book, “Challenger: A True Story of Heroism and Disaster on the Edge of Space.”

Space exploration relies heavily on the interest of the public — the voters, and taxpayers, who are ultimately footing the bill. But that support and excitement can be fickle. When space missions go well, and deliver new insights, the payoff is cheering crowds and increased support. But when they don’t, the result can be reduced funding, canceled missions — and even deaths.

That means, with each mission, the pressure is on to push boundaries, break new ground, and get everything right. Even a small mistake or malfunction could potentially lead to absolute disaster.

On this episode, we look back at three historic NASA missions and how they shaped the course of space exploration. From the awe-inspiring triumph of the first spacecraft landing on Mars in 1976, to a devastating national tragedy in 1986, to the long-game Pluto mission launched in 2006.

If you go by pop culture depictions, menopause seems like no big deal — a few hot flashes, some comical bouts of hormone-fueled rage, and the “big change,” as it was once called, is over. But for many of the 2 million American women who enter menopause each year, the symptoms can be a lot more serious and long-lasting, ranging from vertigo and joint pain to brain fog and heart problems.

On this episode, we take a deep dive into perimenopause and menopause – what’s going on biologically? What can be done to ease symptoms? And why do so many women struggle to receive help from their doctors?

We talk with menopause experts about hormone replacement therapy, and why it was demonized for many years; find out what researchers have discovered about the causes of brain fog; and hear about new efforts to deal with medically induced menopause.