North America is, in many ways, a continent written in stone. Scratch below the surface of any great landscape here and you’ll find a timeline measured not in centuries but in hundreds of millions of years. Every canyon wall, volcanic crater, and weathered rock spire is a sentence in an ongoing story about how this ...
For a long time, the default image of early life on Earth was something almost monotonously simple: a thin bacterial soup quietly drifting through lifeless oceans, with billions of years still to go before anything interesting would show up. That picture is changing fast. What researchers are finding instead is a microbial world of surprising ...
Most people associate ancient cave art with Europe. You probably picture the painted bison of Altamira or the horses of Chauvet. Yet North America holds its own remarkable underground legacy, one that remained largely unknown to outside researchers until just a few decades ago. Similar cave art had never been found in North America until ...
If you’ve ever swatted at a dragonfly and thought it was too big, you haven’t seen anything yet. Roughly 300 to 360 million years ago, long before dinosaurs took a single step, the land that would eventually become North America was a vastly different world. It was warm, swampy, and draped in dense forests of ...
For most of the twentieth century, the story of the first North Americans seemed settled. Humans crossed a land bridge from Siberia roughly thirteen thousand years ago, spread across the continent, and left behind a distinctive set of stone tools. Tidy, teachable, and reassuringly final. Except it wasn’t. Archaeological discoveries throughout the Americas are pushing ...
Most people think of the Grand Canyon or Monument Valley when the Southwest comes to mind. Dramatic, yes. Prehistoric, absolutely. But the region holds far more than its postcard-famous landscapes. Beneath the canyon rims and across the high desert mesas, you’ll find the quiet remains of civilizations that flourished for centuries before Europe had even ...
There’s something quietly staggering about standing on a patch of desert ground and realizing the rock beneath your feet was laid down while dinosaurs were still evolving their first forms. Deep time refers to the concept of geological time spanning billions of years, and it’s a way to understand Earth’s history on a scale far ...
You might look at the Mississippi River, the Great Plains, or the Grand Canyon and take them more or less for granted. They’re just there, part of the backdrop of a familiar continent. What’s easy to miss is that none of it was inevitable. Every valley, every broad flood plain, and every dramatic canyon was ...
You’ve probably stood at the rim of the Grand Canyon, jaw dropped, convinced that what you’re seeing is just rock and more rock. But here is the thing – what stretches before you is actually one of the most complex, unsolved geological puzzles on the planet. Scientists are still rewriting textbooks because of it. Every ...
During the Jurassic period, approximately 201 to 145 million years ago, Earth experienced climatic conditions drastically different from today’s world. This era featured one of the most pronounced greenhouse climates in our planet’s geological history, with no permanent ice at either pole. The Jurassic world was characterized by higher temperatures, different atmospheric composition, and unique ...
