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This Obscure 1960s Guide to LSD Holds Up

A survey of more than 500 private psychedelic users finds real utility in a 60-year-old pamphlet on safe tripping penned by a pioneer of harm reduction

There’s a New Sea Spider in Town

Just when you think sea spiders couldn’t get any more unique…

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A Look at How Many Cancers Are Caused by Infections Worldwide

Nearly one in eight cancers are caused by a pathogen

Where Did the “Social Magic” Go?

A conversation with an Icelandic sociologist about the paradox of connection in our digital age

This Real-Life Sea Monster is Controlled by Joysticks

Its unique hypnotic movements are inspiring roboticists


Read Stories from Our Newest Print Issue: The Stupid Issue

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The Elegance of a Stupid Question

Are computers in mathematics rewriting the definitions of stupid and smart?

The Resistance Is Here

They didn’t plan to be activists. But scientists have united to overturn Trump’s drastic cuts to science.

The Return of a Discredited Pseudoscience

Eugenics is rearing its ugly head again in today’s crucible of politics and culture

How a Horse Flu Outbreak Spurred an Early Animal Rights Crusade

In 1872, New York’s devastating epizootic gave the ASPCA’s young founder a powerful moral argument for animal protection

How Do You Read Ancient Charred Scrolls? Make Your Own

A new technique could unlock the secrets of the Herculaneum scrolls

Envy at the Ballot Box

Majority voting may make us less willing to tolerate advantages for others

I’m Part of the Team Writing the Next Bible of Psychiatry—For the First Time, the DSM Will Use Biology to Understand Mental Disorders

Part of the challenge of finding a biomarker for mental illness is the environment’s significant influence

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What Do You Know About the Deep-Sea Barbie Pig?

What about the Ping Pong Sponge? The Casper the Ghost Octopus? The Gummy Squirrel?

Could AI Have Consciousness That Isn’t Human-Like?

Philosopher Peter Godfrey-Smith on AI consciousness and existential risk

What a Picture of a Dog Has to Do with Reason and Logic

People who can’t see images in their minds challenge an old philosophical standby

What Makes Humans Stupid

It takes intelligence to get things spectacularly wrong. An essay on our undoing.

Your Speech May Contain Hidden Information About How Fast You’re Aging

What you say truly isn’t as important as how you say it

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“Morally Binding” AI Safety Pledge Mocked

AI Safety experts seem to agree the companies can’t self-regulate, and the new White House accord lacks teeth

Who Is Claude Trying to Kid?

Confessing to being mechanical is the most mechanical trick of all

The Evolutionary Raw Deal of the Human Knee

Why don’t great apes have knee problems?

Aging Muscle Has a Hidden Molecular Switch

Uncovering the paradox behind the shift from fast to slow twitch muscle fibers

Do Transplanted Hearts Assume the Age of Their New Host?

Experiments in humans and mice suggest a way to make more organs available for transplant, but may squash a theory of rejuvenation