Each week we uncover the most interesting and informative articles from around the world, here are 10 of the coolest stories in science this week.
Before Stonehenge
A massive, wooden, eyeglass-shaped monument in Avebury, England, that was set alight in ancient ceremonies may be 800 years older than it was thought to be, new research suggests.
Workers in ancient times likely constructed the site first by digging large ditches and then placing oak posts into sockets in the earth, Whittle told Live Science. Then, they used the dug-out earth to backfill and cover the base of the posts and create a huge palisade. [Read more about the strange site.]
Sequencing a Mummy
For the first time, researchers have successfully sequenced the DNA from Egyptian mummies. The findings reveal that these ancient people were more genetically similar to populations living in the eastern Mediterranean — a region that today includes Syria, Lebanon, Israel, Jordan and Iraq — than people living in modern-day Egypt.
Worldwide, the remains of thousands of mummies from ancient Egypt have been excavated, but obtaining intact, undamaged DNA from the bodies has proved challenging. [Read more about the mummy DNA.]
Measuring a Star's Mass
The mass of Stein 2051 B, a white dwarf star located about 18 light-years from Earth, has been a subject of some controversy for over a century. Now, a group of astronomers has finally made a precise measurement of the star's mass and settled a 100-year-old debate, using a cosmic phenomenon first predicted by Albert Einstein.
Einstein's theory of general relativity hypothesized that space is flexible rather than fixed, and that massive objects (like stars) create curves in space, sort of like a bowling ball creating a curve on the surface of a mattress. The degree to which an object warps space-time depends on how massive that object is (similarly, a heavier bowling ball puts a deeper imprint on a mattress). [Read more about the experiment in relativity.]
'Thinking' Flora
Plant seeds may use miniature "brains" to help them decide whether to sprout or stay dormant, new research suggests.
The idea that plants can feel, hear or see is not new; researchers have shown that seedlings arc toward sounds of certain frequencies or hasten their growth when a competing species is planted nearby. And plants can communicate with each other when danger is nearby, according to a 2007 study in the journal Oecologia. [Read more about the plant's brain.]
Older Than We Know
The oldest known bones of our species, dating back around 300,000 years, have been discovered in a cave in Morocco.
Archaeologists uncovered the human fossils, including a partial skull and a lower jaw, during excavations at the archaeological site of Jebel Irhoud in Morocco that began in 2004. But the site has a much earlier excavation history: Scientists first found some of the remains of these same individuals, along with stone tools, in the 1960s during mining operations. [Read more about the oldest fossils.]
Hunting Snakes
When cave-dwelling Cuban boas fancy a meal, they band together to hunt for bats by concealing themselves along the cave entrance and forming a wall of deadly snakes before launching their coordinated strikes, according to a new study on the rare occurrence of snakes hunting in packs.
And coordination among snakes to catch prey has never been proved, said study author Vladimir Dinets, a professor of psychology at the University of Tennessee in Knoxville, who specializes in animal behavior. [Read more about the snake packs.]
Lost Mind of St. John Bosco
When pilgrims lined up in a church in northern Italy to pray before the relic of St. John Bosco, the revered founder of the Salesian religious order, on Saturday (June 3), they encountered a sign with an unexpected message: "Closed. Under construction."
As pressure mounted over the puzzling sign, the church revealed a shocking truth: Someone had stolen preserved brain bits of a saint. [Read more about the missing aircraft.]
Herbs and Mental Risks
The case in Italy involved a 25-year-old man who was admitted to the hospital after two of his friends, who accompanied him to the hospital, told the doctors that he had been acting strangely in the past few days. The man behaved as if he were under the influence of an illegal drug, the friends said. [Read more about the unusual case.]
Instinct vs. Problem Solving
For more than a millennium, scholars have noticed a curious correlation: Atheists tend to be more intelligent than religious people.
But why does this association exist? Dutton set out to find answer, thinking that perhaps it was because nonreligious people were more rational than their religious brethren, and thus better able to reason that there was no God, he wrote. [Read more about differences.]
Novel Approach to Addiction
Heroin produces a high by activating the opioid receptors in the nervous system, triggering feelings of euphoria. The danger is that the drug can also cause the body's systems to become too relaxed, causing a slowdown in breathing. A common cause of death among people who overdose on heroin is respiratory arrest. That is, the person stops breathing and dies. [Read more about the vaccine.]
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