How the Tide Turns at the Mouth of the Elbe
One of the major rivers of Europe, the Elbe flows more than 1,000 kilometers (600 miles) across the…
Shaping the Emerald City – NASA Science
Seattle, Washington—sometimes known as the “Emerald City”—was glimmering in the morning sunlight when an astronaut aboard the International…
Fans of the Arctic – NASA Science
Editor’s Note: Today’s story is the answer to the July Puzzler. Call it an alluvial face-off. On the southern…
Playing the Moon Game – NASA Science
In preparing to visit the Moon’s surface, soon-to-be lunar explorers in NASA’s Apollo program first ventured into a…
Record-Setting Retreat of Hektoria Glacier
To say something moves at a glacial pace is to imply sluggish, unhurried change. But what transpired over…
Thailand’s Krabi Coast – NASA Science
Along the western coast of Southern Thailand, a series of bright tan beaches lines the Andaman Sea. These…
Eyeing the Richat Structure – NASA Science
In a remote part of northern Mauritania on the Adrar Plateau lies a desert landscape rich in human…
Contours of the James Bay Lowlands
Early spring around Hudson Bay in northern Canada is largely indistinguishable from winter. Sea ice still clings to…
Snow in the Shadow of the Andes
On the eastern, arid side of the Andes, the plains of southern Argentina stretch from the mountains to…
A Volcanic Medley Near Mammoth Lakes
Take a tour through volcanic history on the edge of the Sierra Nevada near Mammoth Lakes, California. Between…
A Bit of Gray on an Emerald Isle
Today’s story is the answer to the March 2026 puzzler. Though Ireland is known for the many shades…
Lake Coatepeque – NASA Science
Just inland from the Pacific coast of El Salvador, the striking blue waters of Lake Coatepeque fill part…