You stand on a continent today, but imagine if the ground beneath your feet was once just a small part of a vast, exposed highway of frozen earth stretching between Asia and North America. That ancient route, known as the Bering Land Bridge, is at the heart of one of the biggest questions in human ...
Somewhere beneath the limestone riverbeds of central Texas, an ancient world is still writing its own story. Long before cattle ranches and Hill Country highways defined the landscape, massive creatures moved across shallow tidal flats, pressing their feet into soft coastal mud with enough force to leave marks that endured for more than a hundred ...
Few places on Earth make you feel as small as standing at the rim of the Grand Canyon. You’re not just looking at a big hole in the ground. You’re looking at time itself, stacked in bands of red, tan, and gray, stretching downward through eons you’ll never be able to fully grasp. What makes ...
The Hell Creek Formation is one of paleontology’s most significant treasure troves—a geological time capsule preserving the final chapter of dinosaur dominance on Earth. Stretching across portions of Montana, North Dakota, South Dakota, and Wyoming, this Late Cretaceous sedimentary layer records approximately 2 million years of Earth’s history, culminating in the catastrophe that ended the ...
Roughly 252 million years ago, life on Earth came breathtakingly close to being erased entirely. The Permian-Triassic extinction event, colloquially known as the Great Dying, wiped out an estimated 57% of biological families, 62% of genera, nearly all marine species, and about seven out of every ten terrestrial vertebrate species. No other known crisis in ...
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 ...
