Six million years ago – give or take – the first early humans stood upright and started walking. Thanks to a new look at the fossil record, paleoanthropologist Jeremy DeSilva has some new theories about how and why humans took those first steps.More
Intelligent. Optimistic. Curious.
Interviews By Topic
One of the most famous world travelers of any age was Barry Lopez, the explorer and writer who passed away in 2020. We wanted to remember him by re-visiting Steve Paulson's interview with Lopez about his memoir – called "Horizon."More
Unless you walk or bike to your next vacation destination, you’ll probably have to burn some fossil fuels to get there. Blogger Kathryn Kellogg is a guru of zero-waste living. She has a few tips on how to reduce your impact on the environment when you travel. More
Journalist Elizabeth Becker, the author of "Overbooked: The Exploding Business of Travel and Tourism," breaks down how we got to this moment in global tourism, and how we might nudge nations, companies and ourselves to become more responsible travelers.More
Mary Laura Philpott's memoir is called "Bomb Shelter." It is also an apt metaphor. When the world is on the brink, what do you and your family need to survive?More
Susan Cain is the author of "Bittersweet." She says the experience of sadness can help us feel whole. Cain said "bittersweet" is one of those words we use, but don't know what it means.More
Critic Alissa Wilkinson has found that artists have been responding to the pandemic by doing what they do best: creating and making things that — for at least some people — helped them feel like they are still alive even as they face grief and trauma.More
Jim Thorpe was stripped of the Olympic gold medals awarded to him in 1912, but activists finally got them back in 2022. Today, Thorpe's legacy is about more than medals or even correcting historic wrongs — young Native Americans are looking to him for inspiration.More
During his traditional Sac and Fox funeral in Oklahoma, Jim Thorpe's body was stolen and sold to a small Pennsylvania town. His body is still there as a trophy and tourist trap. Native American activist Suzan Shown Harjo tells the story.More
Tool-making? Agriculture? Language? French neuroscientist Stanislas Dehaene believes there’s an even more basic cognitive skill that gave humans an evolutionary jump start — geometry.More
Math superstar Jordan Ellenberg reveals the geometrical underpinnings of pretty much everything — from pandemics to voting districts to the 14th dimension. If geometry is indeed "the cilantro of math," Ellenberg could convert even the most die-hard hater to the joy of shapes.More
Is there a special mountain in your life? David Hinton, who lives in Vermont, told us about the one he knows best — Hunger Mountain - which he's climbed 300 times. His thinking about mountains has been shaped by his study of ancient Chinese poetry.More
Environmental philosopher and bonafide "mountain man" John Hausdoerffer explains how mountains are connected to all life on earth, and what it means to treat them as "living kin."More
We're part of an extended web of kinship that includes not just people, but plants, animals, rivers and mountains. For Regina Lopez-Whiteskunk, a member of the Ute Mountain Ute Tribe, that knowledge has been passed down through many generations.More
People in the Andes have been telling stories about their mountains for centuries. Writer and educator Lisa Madera says they tell us something essential about the nature of mountains as geologic marvels and sacred sites.More
If you want to cancel a famous writer because of his retrograde politics, Rudyard Kipling — author of "The White Man's Burden" — is an obvious choice. So should we still read Kipling? We ask novelist Salman Rushdie and literary scholar Chris Benfey.More
From an early age, Ukrainian-American poet Ilya Kaminsky developed a deep personal understanding of the political power of poetry and language. He explains why poetry is such a powerful tool in crisis.More
Bernardine Evaristo became the first Black woman to win the Booker Prize in 2019 for her novel “Girl, Woman, Other.” Evaristo talked with Shannon Henry Kleiber about how her childhood and her writing energize her advocacy supporting artists and writers of color.More