Why was Roman concrete so durable?
The ancient Romans were masters of engineering, constructing vast networks of roads, aqueducts, ports, and massive buildings, whose remains have survived for two millennia.
Many...
Bering Land Bridge formed surprisingly late during last ice age
The Bering Land Bridge did not emerge until around 35,700 years ago, less than 10,000 years before the height of the last ice age.
Scientists find the oldest known projectile points in the Americas
Archaeologists have uncovered projectile points in Idaho that are thousands of years older than any previously found in the Americas.
This helps fill in the...
Early humans may have first walked upright in the trees
Human bipedalism – walking upright on two legs – may have evolved in trees, and not on the ground as previously thought, according to...
Scientists reveal the diets of early dinosaurs
The earliest dinosaurs included carnivorous, omnivorous and herbivorous species, according to a team of paleobiologists.
Oxygen could exist in Earth’s solid inner core, shows study
Oxygen can exist in the solid inner core, which provides key constraints for further understanding of the formation process and evolution history of the Earth's core.
Spinosaurus, the largest predatory dinosaur, wasn’t underwater hunter, shows study
Spinosaurus, the largest known predatory dinosaur to roam the Earth, was adapted for hunting along shorelines instead of venturing deep underwater.
Precise solar observations fed millions in ancient Mexico
Before the Spanish arrival in 1519, the Basin of Mexico’s agricultural system fed a population that was extraordinarily large for the time.
How this hell planet got so hot
A new study sheds light on how the “hell planet” got so devilishly hot and how other worlds might become too toasty for life.
The Southern Hemisphere is stormier than the Northern, and we finally know why
For centuries, sailors who had been all over the world knew where the most fearsome storms of all lay in wait: the Southern Hemisphere.