The U.S. Could Switch to Mostly Renewable Energy, No Batteries Needed
Better electricity sharing across states would dampen the effects of variable weather on wind and solar power
Ask Smithsonian: Can Elephants Jump?
The question is why would an animal weighing up to 16,000 pounds need to jump?
Where Are All the Aliens? Taking Shelter From the Universe’s Radiation
Earlier life-forms across the cosmos may have faced thousands to millions of times the cosmic ray dose that we do today
People Are Still Trying to Build a Space Elevator
Though key players have distanced themselves from the concept, a new film examines the continuing draw behind the sci-fi staple
These Unusual American Ants Never Get Old
P. dentata ants are among the very few species to show no signs of deterioration as they age
An Ancient, Brutal Massacre May Be the Earliest Evidence of War
Even nomadic hunter-gatherers engaged in deliberate mass killings 10,000 years ago
Journey to the Center of Earth
Humble Magnesium Could Be Powering Earth’s Magnetic Field
The common element could have been driving the planet’s dynamo for billions of years
What’s the Secretive X-37 Spaceplane Doing Up There?
The Air Force isn’t saying, so we asked other spaceplane experts
How to Modernize the Wood Stove and Help Save the Planet
The humble wood stove is getting a high-tech makeover, and may be going green
When Will We Reach the End of the Periodic Table?
Even with new elements in hand, scientists are struggling to predict the future of the iconic chemical roadmap
Dozens of Insects and Spiders May Live in Every Room of Your House
A survey of 50 North Carolina homes turned up just five rooms that were completely free of arthropods
Social Contact Helps Beneficial Gut Bacteria Spread
A study of chimp poop suggests that social animals share a collective microbiome that might help regulate health
The Dakota Badlands Used to Host Sabertoothed Pseudo-Cat Battles
The region was once home to a plethora of catlike creatures called nimravids, and fossils show they were an especially fractious breed
Astronomers Have Found the Brightest Supernova Yet
The powerful blast is so weird that it could be a whole new kind of star explosion
Humans Were in the Arctic 10,000 Years Earlier Than Thought
Distinctive cut marks on a Siberian mammoth represent the first known evidence of human hunters this far north
Life and Rocks May Have Co-Evolved on Earth
A Carnegie geologist makes the case that minerals have evolved over time and may have helped spark life
For the World’s Wetlands, It May Be Sink or Swim. Here’s Why It Matters
One of the world’s most long-studied marshes has revealed a wealth of information, but it continues to perplex and intrigue the scientists who analyze it
The Ozone Hole Was Super Scary, So What Happened To It?
When the ozone hole was discovered, it became a worldwide sensation. Thirty years later, what’s become of it?
The Burning Truth Behind an E-Waste Dump in Africa
Ending the toxic smoke rising from an iconic dump in Ghana will take more than curbing Western waste
What Landing a Rover on Mars Teaches You About Leadership and Teamwork
In his new book, NASA engineer Adam Steltzner shares his insights on how to inspire people to make the impossible possible
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