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The Seventh Sense
Neuroscience

The Seventh Sense

Long thought to be divorced from the brain, the immune system turns out to be intimately involved in its functioning

By Jonathan Kipnis
A Wave of Resurgent Epidemics Has Hit the U.S.
Public Health

A Wave of Resurgent Epidemics Has Hit the U.S.

Resurgent outbreaks of infectious diseases are sickening thousands, and the causes are societal

By Melinda Wenner Moyer
Brain Cells Communicate with Mechanical Pulses, Not Electric Signals
Neuroscience

Brain Cells Communicate with Mechanical Pulses, Not Electric Signals

Physicists who have revived experiments from 50 years ago say nerve cells communicate with mechanical pulses, not electric ones

By Douglas Fox
The Real Paleo Diet
Evolution

The Real Paleo Diet

Microscopic wear patterns on fossil teeth reveal what our ancestors ate—and provide insights into how climate change shaped human evolution

By Peter S. Ungar
The Unsolvable Problem
Math

The Unsolvable Problem

After a years-long intellectual journey, three mathematicians have discovered that a problem of central importance in physics is impossible to solve—and that means other big questions may be undecidable, too

By Toby S. Cubitt, David Pérez-García and Michael Wolf
Life of a Legend
Physics

Life of a Legend

Science mourns the death of physicist and icon of science Stephen Hawking

By Davide Castelvecchi and Nature
The New Era of Multimessenger Astronomy
Space

The New Era of Multimessenger Astronomy

Astronomers’ newfound ability to see the same cosmic events in light, particles and gravitational waves—a synthesis called multimessenger astronomy— gives them a fuller picture of some of the universe’s most mysterious phenomena

By Ann Finkbeiner
Surrendering to Rising Seas
Climate

Surrendering to Rising Seas

Coastal communities struggling to adapt to rising seas are beginning to do what was once unthinkable: retreat

By Jen Schwartz
The Unlikely Triumph of Dinosaurs
Evolution

The Unlikely Triumph of Dinosaurs

New fossils and analyses topple the long-standing explanation of how dinosaurs came to rule the earth

By Stephen Brusatte
Canary in the Crater
Evolution

Canary in the Crater

Scientists scramble to analyze data from the eruption of Kilauea, hoping to predict similar events elsewhere

By Sara Reardon
The Arctic Is Breaking Climate Records, Altering Weather Worldwide
Weather

The Arctic Is Breaking Climate Records, Altering Weather Worldwide

The Arctic climate is shattering record after record, altering weather worldwide

By Jennifer A. Francis
The American Economy Is Rigged
Policy & Ethics

The American Economy Is Rigged

And what we can do about it

By Joseph E. Stiglitz

A Guide to the World Bitcoin Created

The first big digital currency gave us a glimpse of a new economic order—one that raises more questions than answers

By John Pavlus
Clicks, Lies and Videotape
Computing

Clicks, Lies and Videotape

Artificial intelligence is making it possible for anyone to manipulate audio and video. The biggest threat is that we stop trusting anything at all

By Brooke Borel
Model Citizens
Public Health

Model Citizens

How digital drug dealers and virtual users are providing clues to help stop the U.S. opioid epidemic

By Sara Reardon

Departments

  • From the Editor

    The Year in Science

  • Graphic Science

    A Good Life for All

  • News

    Deep within Mars, Liquid Water Offers Hope for Life

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Introducing Scientific American Health & Medicine

Introducing Scientific American Health & Medicine