The Science Behind Mona Lisa’s Smile
How Leonardo da Vinci engineered the world’s most famous painting
In this issue: The crucial hours after a fraternity pledge’s fall, what Thoreau really saw, and the secrets of Google’s moonshot factory. Plus, the enduring appeal of Joni Mitchell, the science behind Mona Lisa’s smile, and more.
How Leonardo da Vinci engineered the world’s most famous painting
How the secretive Silicon Valley lab is trying to resurrect the lost art of invention
How did Josh Tetrick’s vegan-mayo company become a Silicon Valley darling—and what is he really selling?
Tim Piazza fought for his life for 12 hours before his Beta Theta Pi brothers called 911. By then, it was too late.
In his 2-million-word journal, the transcendentalist discovered how to balance poetic wonder and scientific rigor as he explored the natural world.
Not yet—but it has precious few supporters on either the left or the right.
Talking politics with country music's bawdy, boozy star
How Costco became an unlikely hit in a city known for its refined tastes
IBM pioneered telecommuting. Now it wants people back in the office.
A scientific inquiry
In a region where symbols of the Confederacy are ubiquitous, an unprecedented memorial takes shape.
A very short book excerpt
Ten years after the film’s release, the world has caught up to its bleak vision.
Her music inspires a deep sense of intimacy, yet her fierce privacy is the key to her genius.
In Manhattan Beach, very few things are what they appear to be.
In the 1930s, the Germans were fascinated by the global leader in codified racism—the United States.
How Arthur Schlesinger Jr.’s heroic vision of American presidents led him, and the country, astray
A Secret Sisterhood explores the women who influenced Jane Austen, Charlotte Brontë, George Eliot, and Virginia Woolf.
Journalism in America is in perilous shape, and independence is more important than ever.
Readers respond to our September 2017 cover story and more.
A big question
A poem