Category: Science and Tech

Marie Curie on Google Doodle

Radioactive Curie

Marie Curie turned 144 yesterday.  Well, at least she would have done had she still been alive.  Google marked her life with a Google Doodle. A pioneering chemist and physicist of her time, Curie might not have lived the safest life since today, all of her papers and books are still radioactive even after a century has passed.  Indeed, anyone who wants to view her manuscripts has to wear special protective clothing and sign a waiver of liability ahead of time.  Although ahead of her time vis-à-vis chemistry and physics, she certainly didn’t have enough information on the dangers of radiation; it just wasn’t known back then and was what ultimately led to her death.

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Nobel Prize Winner

Marie Curie won a Nobel Prize in physics in 1903 and another one in chemistry eight years later.  She was born in Poland as Marie Sklodowska and then moved to Paris where she married Pierre Curie.  It was she who increased information about radioactivity which also significantly advanced the use of X-Rays in surgery.  During the First World War, she pushed for mobile radiography units to assist the wounded.  Thus they were renamed Petites Curies (Little Curies).  She passed away in 1934 from an aplastic anemia which resulted from her many years of exposure to radioactive materials.

‘Astronaut’ Crew Emerges After 520 Days of Isolation

The crew of a long-duration isolation study finally “landed” back on earth to be greeted by daylight and applause after living 520 days, or seventeen months, in a simulation of space travel to Mars.

The Mars500 experiment, which cost $15 million, aimed to test whether humans could stay physically and mentally healthy during the months of travel to Mars.

Six male volunteers from Europe, Russia and China took part in the experiment. On Friday, they emerged from their cells red eyed but smiling, and were allowed to greet friends and family briefly before being sent into a three-day quarantine.

“It’s really, really great to see you again, rather heartwarming,” said Diego Urbina, an Italian-Colombian participant. “On this mission we’ve achieved the longest isolation ever so that humankind can go to a distant but reachable planet.

Psychologists worry that the noise and activity of normal life will shock the would-be astronauts greatly.
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“Time seems to have flown by since we closed the hatch last year. But how time really felt to the crew we’ll soon know. Probably we’ll have a very big difference of opinion,” said Igor Ushakov, head of the Russian Institute for Biomedical Problems, which ran the experiment.

Having fed on real astronauts rations, rarely showered and taken daily urine and blood samples, the men felt truly distant from Mission Control.

“I felt a physical distance between out crew and the people in Mission Control. My reasoning knows that they’re just 20 m away from us but my mind can’t accept it.”

New Findings Reveal Prehistoric Human-Dog Bonds

Paleontologists have recently unearthed the fossils of three prehistoric dogs, one of which had a mammoth bone locked in its jaws. Researchers believe the bone may have been placed in the dog’s mouth after its death by a human, in a ritual-like burial.

The bone, and other procedures which were performed on the dog’s body before burial, imply that the relationship between dogs and humans may go back farther than previously believed.

Mietje Germonpre, a paleontologist at the Royal Belgian Institute of Natural Sciences, explained that the mammoth bone could reveal “that the dog was ‘fed’ to accompany the soul of the dead person on its journey.”  She added that a perforation was found in the dog’s skull, which implies a ritual to release the dog’s spirit after the death of its body.

Rob Losey, an associate professor of anthropology at the University of Alberta, said the study certainly reveals that dog domestication occurred much earlier than once believed.
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Researchers believe the dogs were used for hauling loads such as meat, bones and mammoth tusks, as well as firewood.

Scientists Create Animal with Artificial Data

For the first time ever, an animal containing artificial data in its genetic code has been developed by scientists which could result in the possibility of the establishment of “man-made properties in a wide range of animals,” according to a recent article in The Daily Mail. In addition, they could get “atom-by-atom control over molecules in living things” as well.

The research was undertaken by scientists from the Medical Research Council Laboratory of Molecular Biology in Cambridge, who “modified the genetic code of nematode worms, 1mm long invertebrates with just a thousand cells in their transparent bodies.  The study was recorded in the Journal of the American Chemical Society.

The team proved their results using a fluorescent dye – the artificial protein they introduced into the worms’ DNA contained a fluorescent dye that glows cherry red under ultraviolet light.”  If it worked the protein would have to be replicated in all of the worms’ bodies cells for the worms to completely ignite under the rays but there would not be a glow if the technique didn’t work.

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Every living creature has DNA in each cell, acting as a blueprint to set the characteristics of the organism which is comprised of “strings of simpler building blocks called amino acids, which, depending on their combinations, make the different proteins needed to sustain life.”  Each organism contains 20 different amino acids, but combining them all leads to tens of thousands of different proteins.

With this research however, Jason Chin and Sebastian Greiss used a 21st “man-made amino acid not found in nature, in the nematode worms’ DNA,” for the first time ever. In the future, such an approach might be able to be used as a way of bringing in other “amino acids into the animals that could be controlled by light.”

Mathematics Brain?

It seems that there are three types of people in the world: those born with a brain for Math, and those born without it.  Oh that’s only two.  Well there you go.  According to recent research as reported in a Daily Mail article, “being good at mathematics may be entirely pre-destined – you either have it or you don’t.”  But the flip side is that just because you are good at mathematics, will not necessarily mean you have overall intelligence.

<h2>US Research</h2>

This research was carried out in America, with psychologists from John Hopkins University in Baltimore having tested four-year-old children who had not yet been taught any mathematics.  Two hundred kids had to look at blue and yellow dots in flashing groups on a computer screen and say which color they saw the most. They then had to add up items of a page and work out which of two numbers was higher or lower and read numbers.  Other tests included multiplication and thereafter a verbal test since “language and math abilities are thought to be linked through general intelligence.”

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The researchers were trying to work out if mathematical skills formed an integral part of one’s capacity to perform better in all sorts of other tasks as well.  It was found that the kids who performed best in the dots test were also those who were the best at mathematics. Dr. Melissa Libertus led the study that was published in the Developmental Science journal.  She said, “some children looked like they had better number sense simply because they had better math instruction.”  Libertus concluded, “one of the most important questions is whether we can train a child’s number sense to improving his future math ability.”

The results, published in the journal Developmental Science, showed that children who got the best score in the dots test were also the most competent at the maths tests.

Meet Shrek, The Furless Wombat Baby

Australians, unlike the rest of the world, are currently dealing with the winter season in full fury. The Kilmore Wildlife Rescue Center near Melbourne has collected numerous baby animals who were orphaned, as shorter days mean more cars and animals on the road at the same time.

A particularly unique case is Shrek, the furless wombat baby who relies on blankets to keep warm. One of eleven young animals to be rescued this week, Shrek lost her mother to a car and will need to be taken care of for the next two years.

Shrek lost her hair as a result of stress and lack of nutrition, just like another bald wombat that was rescued in Melbourne in the past.
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For more pictures, visit the Daily Mail.