Shapeshifting images run deep in human history, going back to ancient cave paintings. Archeologist Chris Gosden says they're linked to the shaman's ability to cross into the spirit world where humans and animals merge.

Marjolijn van Heemstra is the poet laureate of Amsterdam. As her anxiety about climate change and other problems ratcheted up, she found solace in the larger cosmos and became a "dark sky" activist.

Time may be a fundamental quality of the universe, but physicists still can't explain what time is. That hasn't stopped theoretical physicist Marcelo Gleiser from devoting much of his life to studying the origins of time and the formation of the cosmos.

Simon Winchester is a British journalist and best-selling author who spent decades on the road before finally buying a small farm in the Berkshires. The experience led to his book “Land: How the Hunger for Ownership Shaped the Modern World."

Makenna Goodman is a modern-day homesteader and novelist in rural Vermont. She was inspired by Scott and Helen Nearing, who were back-to-the-land pioneers. But she says their philosophy of "the good life" reeks of class privilege.

Over four decades, philosopher Nancy Fraser has worked to expose the deep roots that connect all the crises of our time: racial violence, environmental devastation, the impoverishment of families, challenges to democracy. Think of each as the toxic byproducts of capitalism.

Pharmaceutical companies have a long history of hunting for medicinal drugs, often in Indigenous cultures. Historian Lucas Richert tells the story of how one company went bioprospecting for peyote.

Dean Lockwood talks about the important role that sound plays in creating the cosmic horror of Lovecraft's work.

Although Jeff VanderMeer's work may seem to have a Lovecraftian influence, VanderMeer says that's not the case. He actually thinks weird fiction needs to move out from the shadow of Lovecraft's incredible influence. He introduces us to one writer who is doing that -- Thomas Ligotti, "the best kept secret in contemporary horror fiction."

In “Somnium DreamViewer,” a mysterious company has developed the technology to capture still images from our dreams — with unsettling effects on our waking hours. Creator Holly Fernwright explains the inspiration behind the series.

To a certain extent, loneliness is part of the human condition. You can be lonely anywhere, even surrounded by friends. But modern life has exacerbated it, and that requires modern solutions. Indie game designer Jason Rohrer has one — an artificial friend named Samantha.

Tall Paul is an Anishinaabe and Oneida rapper enrolled on the Leech Lake reservation in Minnesota. His new album is called "The Story of Jim Thorpe." Charles Monroe-Kane spoke with him about Thorpe’s legacy, sports and hip-hop.

Given the chance, how do Africans tell stories about their own imagined future? And how might the story be different? To get a sense of where African science fiction is heading, we talked with Nnedi Okorafor and Ainehi Edoro.

Jessi Kneeland, a fitness trainer turned body neutrality coach, suggests that aiming for a neutral stance toward one's body — rather than unconditional love — might be more realistic and attainable for many of us.