Geology
Geologists Unravel the Mysteries of Australia's Rare Pink Diamonds
The dazzling, blush-colored gems likely emerged from Earth's mantle some 1.3 billion years ago, when a supercontinent named Nuna broke up, study suggests
Girl Celebrating 7th Birthday Finds 2.95-Carat Diamond
Aspen Brown stumbled upon the pea-sized, golden-brown gem while visiting an Arkansas park
Smart Toilets and Licking Rocks: Ig Nobel Prizes Celebrate Strange Scientific Achievements
Winning research projects reanimated dead spiders and examined how anchovy sexual activity influences ocean mixing
Scientists Look to Ancient Hawaiian Reefs for Clues About Future Sea-Level Rise
Researchers search the shores of Molokai for fossils to help predict the impact of melting ice sheets on our oceans
Mud Cracks on Mars Hint at Conditions That Could Have Formed Life Long Ago
Hexagonal ridges on the Red Planet's surface suggest an ancient cycle of wet and dry periods, ideal for creating molecules necessary for cells
Taylor Swift Concerts Are Generating Seismic Activity
The artist's two recent shows in Seattle shook the ground so much that they registered on a nearby seismometer
You Can Now Take a Sunrise Train Ride to the Top of Pikes Peak
See the panoramic vistas from atop the 14,000-foot mountain that inspired Katharine Lee Bates to write "America the Beautiful"
Eight of the Best Spots to Go Freshwater Diving or Snorkeling in the United States
These bucket-list underwater sites offer up megalodon teeth, manatee herds and other unique encounters
Humans Have Shifted Earth's Axis by Pumping Lots of Groundwater
Removing water from the ground has led to sea-level rise and caused Earth's axis to shift by about 2.6 feet between 1993 and 2010, per a new study
Secrets Still Smolder at One of the World's Most Active Volcanoes
A century after one of Mount Etna's many notable eruptions, scientists are more eager than ever to study the peak's frequent bursts of fiery fury
Seven Ways to Explore Space Without Leaving Earth
From astronaut training sites to working spaceports, these spots across the United States put a terrestrial spin on space travel
Scientists Extract Rocks From Earth’s Mantle
They drilled into a mountain at the bottom of the North Atlantic Ocean
Hawaii's Kīlauea Volcano Is Erupting Again—Here's How to See It
The youngest and most active volcano on the Big Island, it's expected to draw thousands of tourists
Why Indiana Limestone Is One of America's Most Prized Building Materials
From the 19th century to today, a geological trove offers a strong foundation for the nation's cities
See the Breathtaking Ocean Life Found at Deep-Sea Vents
An international team of scientists discovered new hydrothermal vents along the Mid-Atlantic Ridge releasing mineral-rich water hot enough to melt lead
Five Places Where You Can Still Find Gold in the United States
Lucky for you, these gold rush hot spots have not yet run their mining course
These Students Are Part of a 75-Year Study to Map Alaska’s Glaciers
Traversing an icefield by foot and on skis, the young researchers experience one of the coolest classrooms in the nation
America's Waterways: The Past, Present and Future
In a series of articles, <em>Smithsonian</em> magazine highlights all that draws our eyes to our nation's fresh and coastal waters
Florida’s Love-Hate Relationship With Phosphorus
The state has mined and abused the Devil's Element for decades, and now it is increasingly fouling precious coastal waters
Scientists Find Evidence of Another Core Within Earth's Center
The newly proposed layer might have a different structure from the rest of the inner core
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