Just How Small Is the Proton?
New findings challenge a basic theory of physics that presumably had been settled
Environment11299 articles archived since 1845
Recommended: Mummies of the World
Books and recommendations from Scientific American
The Biggest Bang Theory: Astronomers Confirm a New Type of Supernova
A new type of supernova is forcing astronomers to rethink the lives of the biggest stars
Tinker Joys: DIYers Turn Inspiration into Everything from Bamboo Bikes to Urban Rooftop Cosmic-Ray Detectors [Video]
At the World Maker Faire a panel discussion highlighted how scientists depend on nonscientists and their off-campus innovations
Trash Is Her Treasure: A Profile of a Sanitation Anthropologist
A New York University anthropologist discusses why she has spent the past four years working alongside New York City's garbage men and women
Origami Observatory: Behind the Scenes with the Webb Space Telescope
NASA is building an innovative and risky space telescope that promises to surpass the hugely successful Hubble. Here's an exclusive, behind-the-scenes look at the most audacious space project in decades...
Crude Alternatives: Energy Industry Heavyweights Debate Fuels of the Future
With the world's energy demands expected to increase more than three-fold over the next century, ExxonMobil and Shell executives acknowledge the necessity (and difficulty) of unseating inexpensive and efficient crude oil and coal...
Only you can help prevent firefly extinction
Are fireflies disappearing? No one knows for sure, but based on anecdotal evidence firefly (aka lightning bug) populations appear to be fading, with fewer seen every summer.
Can America Lead the Global Electric Car Industry?
U.S.-made electric cars face a maze of export restrictions
Favorite Colors: Color Preference Determined by Desirability of Objects
We like hues that we associate with pleasant things
Will Electric Cars Be Made in America?
For electric cars that run on American roads, it just might make the most business sense to build them in America
Failed eruption shook Saudi Arabia
Long-distance magma flow triggered thousands of earthquakes.
Tapping the Power in Hot Rocks
So-called geothermal power has been around for more than a century. What will it take to heat up this energy source? David Biello reports
Saving species with science at the Fish and Wildlife Service
Coping with climate change is a key priority for conservation in the United States, says new science adviser.
Light-control measures appear effective near a key Arizona astronomical site
Kitt Peak in southern Arizona is blessed with two of the attributes astronomers most value in a telescope site, high elevation and low humidity, both of which reduce the atmospheric distortion of starlight before it reaches a ground-based telescope peering into the night sky...
![How to Restore the Florida Panther: Add a Little Texas Cougar [Slide Show]](https://static.scientificamerican.com/sciam/cache/file/C21F8D34-D752-4210-AF7C7DEAED4EAB3F_agenda.jpg?w=275&h=154&fit=crop)
How to Restore the Florida Panther: Add a Little Texas Cougar [Slide Show]
Introducing female cougars from Texas has helped the Florida big cats rebound
How to Restore the Florida Panther: Add a Little Texas Cougar [Slide Show]
Introducing female cougars from Texas has helped the Florida big cats rebound
