The Inside Story of Christo’s Floating Piers
The renowned artist dazzles the world again, this time using a lake in northern Italy as his canvas
The Fight Against Elephant Poachers Is Going Commando
In central Africa, a former Israeli military trainer and his team are deploying battle-tested tactics to stop the runaway slaughter of elephants
A Secret Tunnel Found in Mexico May Finally Solve the Mysteries of Teotihuacán
The chance discovery beneath a nearly 2,000-year-old pyramid leads to the heart of a lost civilization
New gene-editing technology gives scientists the ability to wipe out the carriers of malaria and the Zika virus. But should they use it?
Did Neanderthals Die Out Because of the Paleo Diet?
A new theory links their fate to a meat-heavy regimen
How an Obscure Photographer Saved Yosemite
The beauty of the national park became clear long before Ansel Adams
Readers responses to our May issue
What’s the Best Way to Help the Amazon’s Indigenous People?
Can a pioneering computer model save the rainforest’s residents from our best intentions?
From user-generated content to political screeds, the future of news happens to look a lot like the past
The Starship Enterprise Is Coming in for a New Landing at the Smithsonian
This artifact in the Air and Space Museum collections boldly returns to public view
Inside the Grand Plan to Send Humans to Mars
NASA’s innovative deputy administrator Dava Newman explains just how close we are to sending astronauts far, far away
Why Benedict Arnold Turned Traitor Against the American Revolution
The story behind the most famous betrayal in U.S. history shows the complicated politics of the nation’s earliest days
Reader responses to our April issue
The NASA Robot That Failed to Do Its Job
A cautionary tale about the android who just wasn’t suited for the task at hand
Can Proteins From Living Cells Solve Problems That Vex Supercomputers?
When nature knows best
Who Really Wrote “Citizen Kane”?
Two new books offer divergent theories on the authorship of the much-heralded film
Fashion Photographer Klaus Mitteldorf Captures the Chaos of Modern Identity
These images evoke a world of endless distraction
How a Psychedelic Concert Poster Rocked the World
C’mon baby light my flier
An Oral History of “Star Trek”
The trail-blazing sci-fi series debuted 50 years ago and has taken countless fans where none had gone before
The Deadly Cunning of the Black Widow’s Color Scheme
Why did the spider evolve to have that crimson hourglass on its back?
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