All upcoming Science & Nature programs

Over the centuries, humans have developed tools to see what was once invisible. Cameras, telescopes, microscopes, and MRI machines reveal what the eye cannot, transforming our understanding of the universe and the human body. Daniel K. Sodickson—a physicist and pioneer in biomedical imaging—traces the history of vision, from early eyes in ancient oceans to high-tech devices integrated with artificial intelligence, showing how imaging reshapes the way we see the world, others, and ourselves.

Memory plays a major role in defining who we are. But what if memory could be changed intentionally, precisely, and for the better? Neuroscientist Steve Ramirez examines how memory manipulation shapes the imagination and sense of self and considers the question of whether erasing a deeply traumatic memory would change who a person is. Ramirez also discusses the ethics of artificially controlling memory.

Insects are the most abundant animals on the planet, numbering in the quintillions. Oddly enough, they are also the least observed. Naturalist Eric R. Eaton aims to inspire you to watch more bugs and shares what you can do to keep these critters thriving. He highlights the basic tools for watching insects with all five senses, suggests best habitats and circumstances for seeing the most diversity, and offers tips for attracting desirable insects to your yard and garden.

For centuries, mariners spun tales of gargantuan waves in the open ocean, annihilating walls of water measuring 100 feet high or taller. Though once dismissed as impossible, new evidence has led oceanographers to determine that we have underestimated how the seas behave at their most ferocious. Journalist and author Susan Casey provides a look at these colossal, ship-swallowing rogue waves—noting that as scientists scramble to understand this phenomenon, others, including extreme surfers, view the giant waves as the ultimate challenge.

Avocados are one of today’s most beloved foods, valued for their rich flavor, healthy fats, and essential nutrients. But long before, avocados evolved as nourishment for giant Ice Age animals like sloths and mammoths. When those creatures vanished, humans stepped in, reshaping the fruit through domestication and forest management. Archaeobotanist Heather Thakar follows the avocado’s history from the highlands of ancient Honduras to today’s grocery stores.

Go on a voyage through the Southern Ocean to follow the lives of Antarctica’s penguins through an unforgettable season on the ice. Amanda Hunter, a marine biologist and polar expedition guide, explores their migrations, fierce challenges, and moments of new life as they navigate one of the harshest climates on Earth. Discover what makes these birds so remarkably resilient and why their story matters now more than ever.

Poland has 23 national parks, ranging from very small to well-known throughout Europe. Tour guide Christopher Skutela leads a visual journey to several of them, including a UNESCO World Heritage Site, the site of the country’s highest mountain, and a 220-square-mile park.

Sam Gennawey, a former urban planner, theme park historian, and author of Sacred Landscapes: One Van Lifer's Six-Year, 175,000-Mile National Park Journey likens the National Park Service (NPS) to a meticulously curated museum that showcases the nation’s most culturally significant landscapes. As he examines nature-focused parks and the architecture that frames them—from vintage “Parkitecture” lodges to modern visitor centers—he offers his unique perspective on landscape storytelling, his experience visiting nearly 390 parks, and his insight as a longtime NPS volunteer.

Alzheimer’s disease, and the dementias in general, are among the most-feared consequences of being lucky enough to survive into older age. Barry Gordon, a nationally recognized expert on memory and memory disorders, sheds light on these debilitating conditions and provides guidance on what you need to know to take the most informed and active steps if faced with one of them—whether personally or in a family member or friend.

When it comes to sex and love, ancient peoples tell us a lot about topics including what was forbidden; opportunities for premarital and extramarital sex; their ways of lovemaking; and how members of the same and the opposite gender expressed love for one another. Drawing from a multitude of cultures, professor emeritus of classics Robert Garland discusses what we know and don’t know about sex and love in the ancient world.