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Climate change mystery solved: Ancient sea ice loss spurred Antarctic cold reversal

Climate change mystery solved: Ancient sea ice loss spurred Antarctic cold reversal

Science
June 22 (UPI) -- A mysterious period of climate change, known as the Antarctic cold reversal, was triggered by the rapid loss of sea ice nearly 15,000 years ago, according to a study published Monday in the journal Nature Geoscience. At the end of the last ice age, some 18,000 years ago, atmospheric carbon levels began to rise, Earth's glaciers started receding and the world steadily warmed. But this period of warming didn't proceed uninterrupted. It happened in fits and starts. Advertisement One fit, beginning 14,600 years ago, was particularly pronounced: the Antarctic cold reversal. After a period of greenhouse warming, atmospheric CO2 levels plateaued -- remaining at 240 parts per million for 1,900 years. Scientists weren't sure what caused the plateau, but researchers recently found ...
Problem that would take 10,000 years for normal PC is solved in 4 minutes

Problem that would take 10,000 years for normal PC is solved in 4 minutes

Technology
Researchers at Google have created a computer that can carry out calculations way beyond the reach of traditional computers, it has been reported.The scientists say it marks the achievement of something called "quantum supremacy". Quantum supremacy is when a special device, called a quantum computer, can carry out a single calculation that no conventional computer would be capable of within a reasonable time.According to the Financial Times, the quantum computer - called Sycamore - worked out whether an algorithm produced a genuinely random sequence of numbers.It took three minutes and 20 seconds to come up with an answer - something the most powerful commercially available conventional computer would have taken about 10,000 years to do. ...
Wombats' cube poo mystery may have been solved

Wombats' cube poo mystery may have been solved

Technology
Wombats are curious creatures. Chubby and short-legged, the marsupials are unusual even before you consider their unique ability to produce cube-shaped poo. Now, scientists in the US may have discovered how and why the phenomenon occurs.Dr Patricia Yang, a fluid hydrodynamics specialist from Georgia Institute of Technology, has a particular interest in studying how blood, food and urine move within animals' bodies.She and her colleagues found that wombats' digestive processes and soft tissue structures produce the unusual shape."The first thing that drove me to this is that I have never seen anything this weird in biology. That was a mystery," said Dr Yang."I didn't even believe it was true at the beginning. I Googled it and saw a lot about cube-shaped wombat poop, but I wa...
CDC worker's disappearance partially solved after body found

CDC worker's disappearance partially solved after body found

Health
Authorities have partially solved the mysterious disappearance of a Centers for Disease Control and Prevention employee with the discovery of his body. But they may never know how he drowned in a river not far from his home. Fishermen found Timothy Cunningham's body on Tuesday partially submerged in water and mud on the west bank of the Chattahoochee River in Atlanta, fire-rescue department spokesman Sgt. Cortez Stafford said at a news conference. Fulton County Chief Medical Examiner Jan Gorniak determined the cause of death as drowning, but said she couldn't provide additional information because she was still awaiting toxicology reports. "Since the investigation is ongoing, we do not have ... whether it was an accident, a suicide, or anything other than that" Cunningham drowned, Gorniak...
'Frankenstein dinosaur' mystery solved

'Frankenstein dinosaur' mystery solved

Science
Scientists have solved the puzzle of the so-called "Frankenstein dinosaur", which seems to consist of body parts from unrelated species. A new study suggests that it is in fact the missing link between plant-eating dinosaurs, such as Stegosaurus, and carnivorous dinosaurs, like T. rex. The finding provides fresh insight on the evolution of the group of dinos known as the ornithischians. The study is published in the Royal Society journal Biology Letters. Media playback is unsupported on your deviceMatthew Baron, a PhD student at Cambridge University, told BBC News that his assessment indicated that the Frankenstein dinosaur was one of the very first ornithischians, a group that included familiar beasts such as the horned Triceratops, and Stegosaurus which sported an array of bony plates al...