There are two sides to giving up. The virtue of sacrifice – and the sin of despair. So how do we decide which is which? That’s the question psychoanalyst Adam Phillips asks in his newest book “On Giving Up.”

Suzanne Simard transformed our understanding of forest ecology by uncovering the fungal networks that trees use to communicate with each other. Anne Strainchamps went walking with Simard to see firsthand how a forest is like a kinship network.

Are the really big psychedelic experiences just hallucinations, or do they crack open some transpersonal dimension of consciousness? Philosopher Peter Sjöstedt-Hughes believes we need a metaphysics of psychedelics to explain these experiences.

The internet is indeed overflowing with fake content, says computer scientist Walter Scheirer. But the vast majority of it seems aimed at the creation of connection—rather than destruction.

There are approximately 1.4 billion iPhone users worldwide and more than 3 billion Facebook users. In the next few decades, many of those users will die, leaving behind vast amounts of precious data. What happens to all of it?

Before the era of data mining, scientists in the 1960s began a first-of-its kind study of personality—by secretly studying a group of preschoolers. Former test subject Susannah Breslin uncovers the buried secrets of that study.

Behavioral neurologist Michael Trimble takes us on an evolutionary journey to unpack one of the few things that make Homo sapiens unique — we cry emotional tears. 

A.J. Jacobs' latest research project turned obsession is puzzles. He goes deep into puzzle history and lore in a new book “The Puzzler: One Man’s Quest to Solve the Most Baffling Puzzles Ever, from Crosswords to Jigsaws to the Meaning of Life.”

Could you get the same therapeutic benefits of a psychedelic drug without actually tripping? Neuroscientist David Olson wants to re-engineer psychedelic molecules to remove the trip. If successful, he might revolutionize the treatment of mental disorders.

The news about psychedelics tends to focus on clinical trials and lab research. But there’s a long tradition of underground guides working with plant medicines who refer to "unseen beings" and plants as "teachers." Psychologist Rachel Harris talked with many women elders in the psychedelic underground. She calls them "spiritual warriors."

Archaeologist Chris Gosden has written a global history of magic, from the Ice Age to the internet. He told Steve Paulson he’s come to believe our own culture would be healthier and happier if we took magic more seriously.

In 17th century Germany, the mother of famed astronomer Johannes Kepler, Katharina Kepler, was accused of being a witch. Centuries later, author Rivka Galchen has taken her story and spun it into fiction in her book "Everyone Knows Your Mother is a Witch."

Dreams are funny, confusing and surprising in the world of cartoonist Roz Chast. And they are occasionally disturbing and maybe necessary to process both our everyday and most bizarre thoughts, she tells Shannon Henry Kleiber.

Four hundred years ago, London was full of magicians, but they weren’t like the wizards of Harry Potter. These were practitioners of “service magic.” Historian Tabitha Stanmore uncovers this surprising story in her book “Cunning Folk.”