A newly discovered receptor in the body– similar to the receptors for endorphins or for morphine...
Research has resulted in a new, internationally agreed radiocarbon calibration curve that will...
New research shows that iron may play a role in preserving ancient tissues within dinosaur fossils, but also may hide them from detection. The finding could open the door to the recovery of more ancient tissues from within fossils.
Scientific models of life’s origins almost always look to minerals for such essential tasks as the synthesis of life’s molecular building blocks. But this assumes that the mineral species found on Earth today are much the same as when life emerged. A new analysis challenges that assumption.
Rain as acidic as undiluted lemon juice may have played a part in killing off plants and organisms around the world during the most severe mass extinction in Earth’s history.
A team has discovered a novel receptor that allows the immune system of modern humans to recognize dangerous invaders, and subsequently elicits an immune response. The blueprint for this advantageous structure has also been identified in the genome of Neanderthals, hinting at its origin.
Archaeologists have unearthed what may be the oldest— and largest— ancient wine cellar in the Near East, containing forty jars, each of which would have held fifty liters of strong, sweet wine.
A scientist has uncovered what may be the first recognized example of ancient Martian crust.
Google Maps has gone into the Roman catacombs, providing a virtual tour of the labyrinthine cemetery complex that stretches for kilometers underground.
Societies between 1,000 and 1,500 A.D. were better organized than most people think, and actually employed some of the same techniques used today to survive or mitigate disasters, even if they didn’t always understand the causes.
Researchers have reconstructed the composition of the Earth's atmosphere of the last 220 million years by analyzing modern and fossil plant resins. The results suggest that atmospheric oxygen was considerably lower in the Earth's geological past than previously assumed.
For years, scientists have been dogged by this evolution question: Just where did man's best friend first appear? Now, a large DNA study is lining up with fossils, suggesting dogs originated in Europe some 19,000 to 32,000 years ago.
The world’s largest and oldest meteorite impact structure has been discovered through research on the formation of gold deposits in Western Australia’s Eastern Goldfields.
What may be the oldest complete fossil on Earth paints a smelly but colorful picture of our microbial ancestors from nearly 3.5 billion years ago.
Smithsonian is using 3D technology to make museum collections and scientific specimens more widely available for anyone to use and study.
A new study has revealed the well-preserved remnants of a complex ecosystem in a nearly 3.5 billion-year-old sedimentary rock sequence in Australia.
This image shows the monastery at Petra. Petra is a historical and archaeological city in the southern Jordanian governorate of Ma'an.
Researchers have found that long and slender stone tools were made by human ancestors at least a million years ago– nearly twice as long ago as generally thought.
More than 3,200 years ago, the thriving civilizations in and around modern-day Israel suddenly collapsed for reasons that have long been a mystery. Now, archeologists have found an answer in the pollen at the bottom of Israel's lakes.
A study of the full genetic code of a common human virus offers a dramatic confirmation of the "out-of-Africa" pattern of human migration, which had previously been documented by anthropologists and studies of the human genome.
New research has revealed that the oxygen content 2.1 billion years ago was probably the same as when life exploded 500 million years ago, showing that an abundance of oxygen does not necessarily lead to the evolution of advanced life.
The discovery of a 1.8-million-year-old skull of a human ancestor buried under a medieval Georgian village provides a vivid picture of early evolution and indicates our family tree may have fewer branches than some believe.
Archaeologists in Sweden say they have unearthed the remains of unusually large wooden monuments near a pre-Viking Age burial ground.
Researchers have discovered the earliest known complete nervous system, exquisitely preserved in the fossilized remains of a never-before described creature that crawled or swam in the ocean 520 million years ago.
Researchers found a minuscule female insect fossilized in a paper-thin piece of shale and concluded it still contains its last supper. This is a biology first; a blood meal has never been found intact in a fossil before.
If you thought recycling was just a modern phenomenon championed by environmentalists and concerned urbanites— think again. There is mounting evidence that hundreds of thousands of years ago, our prehistoric ancestors learned to recycle the objects they used in their daily lives.
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