The circle, named Kostenki 11, was about 40 feet in diameter with no obvious entrance.
Ballgames played an important role in the civilizations of ancient Central America.
"The quantity of fish we have found and studied are unprecedented in the central Sahara," researcher Savino di Lernia told Newsweek.
The findings demonstrate that Australia's earliest known human population consumed a range of plant foods, including those that required processing.
"In recent years we have seen increasing evidence that Neanderthals were more sophisticated than previously thought," researcher Emma Pomeroy said.
Researchers say that the engravings in the cave are the oldest of their kind ever discovered in the Spanish autonomous region of Catalonia.
A similar journey would have been made by humans over 65,000 years ago.
Researchers say the discovery shows the human body was used for social expression as much in the Pleistocene as it was today.
"As far as we know, this is the only example of this practice anywhere in the world," said Sara Juengst from the University of North Carolina-Charlotte.
Computer simulation shows 300,000 years is more than enough time for a new human species to arise.
The palace site, known as Kemune, was until recently covered by water from a reservoir, according to archaeologists.
Researchers say skull found in a Transylvania cave is clear evidence of interpersonal violence among ancient Europeans.
Remains belonging to one of the biggest birds that ever lived have been discovered in a cave in Crimea.
The carvings were made on a strange formation within the crater known as the "Rain Snake" dyke.
Cannibalism was a highly profitable survival strategy for our ancient ancestors, according to a study.
The 160,000-year-old jawbone suggests the extinct hominins had adapted to life at high-altitude.
Researchers studied the remains of Neanderthals found in a cave in southeastern France.
An experimental study suggests humans can improve technology over generations without necessarily having a sophisticated understanding of it.
Scientists shed light on the mysterious group.
The research shows our ancient cousins were "no dummies," one scientist said.
The ancient skull fragment is "a unique opportunity to learn more about the biology and diversity of our ancestors and their relatives and, ultimately, about their evolution."
Dried meat may have offered a long-lasting source of food in a changing rainforest.
Scientists now believe humans stalked and then confronted a giant ground sloth thousands of years ago in New Mexico.
The tracks of two adults and a child, researchers say, were left some 13,000 years ago.
The ancient tool findings are detailed in a series of three studies published in the journal "Science."
Neanderthals aren't the only ancient people that have left traces in our modern DNA.
The cache includes knives and spearpoints and the first giant hand axe ever discovered in the Arabian Peninsula.