Πέμπτη 1 Μαρτίου 2012

Newsletter for Thursday 1 March

 

Newsletter - March 1 - Today in Science History

TODAY IN SCIENCE HISTORY
NEWSLETTER - 1 MARCH

Feature for Today
The fogged plate - Becquerel's discovery of radioactivityOn 1 Mar 1896, as we are often told, Henri Becquerel "discovered" radioactivity. But hold that thought! He had no idea like that. What really happened was that, for whatever reason, he decided to develop what by any rationale of the time, was a blank photographic plate. And he found that it was fogged. And in the shape of the uranium compound crystals that had been sitting on it, in a dark drawer. And his mind was still thinking "phosphorescence" and of the absence of charging with sunlight. And that's all he knew on 1 Mar 1896.

The next few years were full of wonder. And stumbling around. As this Harper's Magazine article in 1902 shows, a lot had been learned. But not everything. Your eyes will pop when you read, "So powerful is the phosphorescence caused by Becquerel rays that if a tube of radium chloride be held to the forehead, and the experimenter close his eyes, he will still see light." OMG!

So, like the Lone Ranger show intro said,  "Return with us now to those thrilling days of yesteryear...", say "Hi Yo Radium!" and mount your trusty steed, a time-machine. As you read the article written for the lay reader scant years after the first discovery of radioactivity, imagine yourself to be learning for the first time of this new scientific discovery.

X-Rays were discovered only a few months before. What a new horizon! And such naïveté. In fact, science weaponized radioactivity by just 49 years later. Such a draconian outcome. Just 49 years later. Reflect also about that as you read this author gushing over Radio-Activity: A New Property of Matter from 1902.

And on 1 Mar 1954, less than a decade after an atom bomb was dropped on Hiroshima, a hydrogen bomb test produced an explosion 1,000 times greater than that. Just 58 years after Becquerel first looked at his fogged photographic plate.
Breath-taking!

Book of the Day
The Children's MachineOn 1 Mar 1928, Seymour Papert was born, the American computer scientist who invented the Logo computer programming language as an educational computer programming language for children and co-founded the Artificial Intelligence Lab at MIT. Today's Science Store pick is his book, The Children's Machine: Rethinking School In The Age Of The Computers (1993), a sequel to his classic Mindstorms. He gives his perspective on how computers have the potential to revolutionize education. Too often, he believes, computers are isolated from the learning process instead of being integrated into all areas of instruction, and presents his alternative ways to ensure that that computers have a unique, accelerating role to play in developing the ability for children to learn new skills. New: $19.00. Save 10% Price $17.10. Available Used from $0.24 (as of time of writing).

Yesterday's pick: Linus Pauling in His Own Words: Selections From his Writings, Speeches and Interviews, by Barbara Marinacci.
For picks from earlier newsletters, see the Today in Science Science Store home page.


Quotations for Today
"My belief (is) that one should take a minimum of care and preparation over first experiments. If they are unsuccessful one is not then discouraged since many possible reasons for failure can be thought of, and improvements can be made. Much can often be learned by the repetition under different conditions, even if the desired result is not obtained. If every conceivable precaution is taken at first, one is often too discouraged to proceed at all."
- Archer J.P. Martin, English biochemist (born 1 Mar 1910)  Quotes Icon
"Nothing enrages me more than when people criticize my criticism of school by telling me that schools are not just places to learn math and spelling, they are places where children learn a vaguely defined thing called socialization. I know. I think schools generally do an effective and terribly damaging job of teaching children to be infantile, dependent, intellectually dishonest, passive and disrespectful to their own developmental capacities."
- Seymour Papert, American computer scientist (born 1 Mar 1928)  Quotes Icon
"If you dream of something worth doing and then simply go to work on it and don't think anything of personalities, or emotional conflicts, or of money, or of family distractions; it is amazing how quickly you get through those 5,000 steps."
- Edwin Herbert Land, American inventor of Polaroid photography (died 1 Mar 1991)  Quotes Icon

QUIZ
Before you look at today's web page, see if you can answer some of these questions about the events that happened on this day. Some of the names are very familiar. Others will likely stump you. Tickle your curiosity with these questions, then check your answers on today's web page.
Births
Archer J.P. Martin, born 1 Mar 1910, was a British biochemist who was awarded a share of the 1952 Nobel Prize for developing a process where the equipment included paper.
What was this process? Quotes Icon
John Pell, born 1 Mar 1611, was an English mathematician who introduced the obelus into England. The name of this well-known symbol comes from a Greek word meaning a "roasting spit."
What is this symbol?
Deaths

A physical chemist (1852-1911) was the first winner of the Nobel Prize for Chemistry (1901) for work on rates of reaction, chemical equilibrium, and osmotic pressure.
Can you name this scientist?
Events

On 1 Mar of a certain year, direct-dialed transatlantic phone calls were made possible between the US and Britain by the combined efforts of AT&T and the British Post Office (which also then handled the British telephone system.)
In what decade were these first such phone calls made possible?

On 1 Mar 1954, the hydrogen bomb code-named Bravo was exploded in a test over an ocean island. With explosive power of about 20 megatons of TNT it was the most powerful of all U.S. thermonuclear bomb tests in the area. Radioactivity made the islands an unsafe wasteland, leaving the evacuated indigenous people estranged from their home soil.
Can you name the island?

Answers

When you have your answers ready to all the questions above, you'll find all the information to check them, and more, on the March 1 web page of Today in Science History. Or, try this link first for just the brief answers.

Fast answers for the previous newsletter for February 28: René-Antoine Ferchault de Réaumur; the body louse; tuberculosis; the decade including the year 1935.

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ScienceDaily: Living Well News

ScienceDaily: Living Well News


Who's in the know? To a preschooler, the person doing the pointing

Posted: 29 Feb 2012 12:55 PM PST

If you want a preschooler to get the point, point. That's a lesson that can be drawn from a new study. As part of their investigation of how small children know what other people know, the authors found they were able to mislead preschoolers with the simple introduction of a pointing gesture.

The ever-expanding definition of 'diversity'

Posted: 29 Feb 2012 09:11 AM PST

Diversity has become a goal for all sorts of institutions -- but what it means may depend on who you ask. A new study finds that people's ideologies help determine what they count as "diverse."

Two genes do not make a voter

Posted: 29 Feb 2012 09:11 AM PST

Voting behavior cannot be predicted by one or two genes as previous researchers have claimed, according to a professor of public policy and political science.

Winning makes people more aggressive toward the defeated

Posted: 29 Feb 2012 07:47 AM PST

In this world, there are winners and losers – and, for your own safety, it is best to fear the winners.

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News


Thickest parts of Arctic ice cap melting faster

Posted: 29 Feb 2012 04:00 PM PST

A new study revealed that the oldest and thickest Arctic sea ice is disappearing at a faster rate than the younger and thinner ice at the edges of the Arctic Ocean's floating ice cap.

New infant formula ingredients boost babies' immunity by feeding their gut bacteria

Posted: 29 Feb 2012 12:55 PM PST

Adding prebiotic ingredients to infant formula helps colonize the newborn's gut with a stable population of beneficial bacteria, and probiotics enhance immunity in formula-fed infants, two studies report.

Who's in the know? To a preschooler, the person doing the pointing

Posted: 29 Feb 2012 12:55 PM PST

If you want a preschooler to get the point, point. That's a lesson that can be drawn from a new study. As part of their investigation of how small children know what other people know, the authors found they were able to mislead preschoolers with the simple introduction of a pointing gesture.

Effects of a concussion may last longer than symptoms

Posted: 29 Feb 2012 12:50 PM PST

A new study shows that physiological problems stemming from a concussion may continue to present in the patient even after standard symptoms subside.

Earthworms to blame for decline of ovenbirds in northern Midwest forests

Posted: 29 Feb 2012 11:22 AM PST

A recent decline in ovenbirds, a ground-nesting migratory songbird, in forests in the northern Midwest United States is being linked by scientists to a seemingly unlikely culprit: earthworms.

How insects 'remodel' their bodies between life stages

Posted: 29 Feb 2012 11:22 AM PST

How is it that an insect can remake itself so completely that it appears to be a different creature altogether, not just once, but several times in its lifetime? Working with fruit flies scientists found that genes whose expression is induced by pulses of steroid hormone are key to these transformations. A similar mechanism may underlie puberty -- the human analog of metamorphosis.

Blockade of learning and memory genes may occur early in Alzheimer's disease: Treatable in mice

Posted: 29 Feb 2012 11:21 AM PST

A repression of gene activity in the brain appears to be an early event affecting people with Alzheimer's disease, researchers have found. In mouse models of Alzheimer's disease, this epigenetic blockade and its effects on memory were treatable.

Astronomers rediscover life on Earth -- by looking at the moon

Posted: 29 Feb 2012 11:08 AM PST

By observing the Moon using ESO's Very Large Telescope, astronomers have found evidence of life in the universe -- on Earth. Finding life on our home planet may sound like a trivial observation, but the novel approach may lead to future discoveries of life elsewhere in the universe.

Oldest fossilized forest: Entire fossil forest dating back 385 million years unearthed

Posted: 29 Feb 2012 11:08 AM PST

Researcher who previously found evidence of the Earth's earliest tree, has gone one step further. The research team has now unearthed and investigated an entire fossil forest dating back 385 million years.

When continents collide: New twist to 50-million-year-old tale

Posted: 29 Feb 2012 11:06 AM PST

Fifty million years ago, India slammed into Eurasia, a collision that gave rise to the tallest landforms on the planet, the Himalaya Mountains and the Tibetan Plateau.

Old drug reveals new tricks: How interferon works to suppress virus in patients with HIV, hepatitis

Posted: 29 Feb 2012 11:06 AM PST

A drug once taken by people with HIV/AIDS but long ago shelved after newer, modern antiretroviral therapies became available has now shed light on how the human body uses its natural immunity to fight the virus—work that could help uncover new targets for drugs.

The ever-expanding definition of 'diversity'

Posted: 29 Feb 2012 09:11 AM PST

Diversity has become a goal for all sorts of institutions -- but what it means may depend on who you ask. A new study finds that people's ideologies help determine what they count as "diverse."

Two genes do not make a voter

Posted: 29 Feb 2012 09:11 AM PST

Voting behavior cannot be predicted by one or two genes as previous researchers have claimed, according to a professor of public policy and political science.

Genetics of endangered African monkey suggest troubles from warming climate

Posted: 29 Feb 2012 07:52 AM PST

A rare and endangered monkey in an African equatorial rainforest is providing a look into our climatic future through its DNA. Its genes show that wild drills, already an overhunted species, may see a dramatic population decline if the forest dries out and vegetation becomes sparser amid warming temperatures, researchers report.

No workout? No worries: Scientists prevent muscle loss in mice, despite disease and inactivity

Posted: 29 Feb 2012 07:51 AM PST

If you want big muscles without working out, there's hope. Scientists report a family of protein transcription factors, called "Forkhead (Fox0)," that plays a significant role in the regulation of skeletal muscle mass. Interfering with Fox0 prevented muscle wasting associated with cancer and sepsis, and even promoted muscle growth. This is likely relevant to any disease, condition or lifestyle that leads to muscle wasting.

Gluten-free, casein-free diet may help some children with autism, research suggests

Posted: 29 Feb 2012 07:51 AM PST

A gluten-free, casein-free diet may lead to improvements in behavior and physiological symptoms in some children diagnosed with an autism spectrum disorder (ASD), according to researchers. The research is the first to use survey data from parents to document the effectiveness of a gluten-free, casein-free diet on children with ASD.

Winning makes people more aggressive toward the defeated

Posted: 29 Feb 2012 07:47 AM PST

In this world, there are winners and losers – and, for your own safety, it is best to fear the winners.

New model provides different take on planetary accretion: Collapse may take place in 3-D cold dust cloud

Posted: 29 Feb 2012 06:19 AM PST

The prevailing model for planetary accretion assumes that the solar system's planets formed in an extremely hot, two-dimensional disk of gas and dust, post-dating the sun. Scientists now propose a radically different model, in which collapse takes place in a cold, three-dimensional dust cloud.

Inherited epigenetics produced record fast evolution

Posted: 29 Feb 2012 06:18 AM PST

The domestication of chickens has given rise to rapid and extensive changes in genome function. Scientists have established that the changes are heritable, although they do not affect the DNA structure.

T. rex has most powerful bite of any terrestrial animal ever

Posted: 28 Feb 2012 05:38 PM PST

Research, using computer models to reconstruct the jaw muscle of Tyrannosaurus rex, has suggested that the dinosaur had the most powerful bite of any living or extinct terrestrial animal.

Sea level rise to alter economics of California beaches: Certain beaches will shrink, others remain large

Posted: 28 Feb 2012 08:43 AM PST

Rising sea levels are likely to change Southern California beaches in the coming century, but not in ways you might expect. While some beaches may shrink or possibly disappear, others are poised to remain relatively large -- leaving an uneven distribution of economic gains and losses for coastal beach towns, according to a new study.

Scientists discover new 'off switch' in immune response

Posted: 28 Feb 2012 08:43 AM PST

Scientists have discovered a new "off switch" in our immune response which could be boosted in diseases caused by over-activation of our immune system, or blocked to improve vaccines.

ScienceDaily: Top Science News

ScienceDaily: Top Science News


Thickest parts of Arctic ice cap melting faster

Posted: 29 Feb 2012 04:00 PM PST

A new study revealed that the oldest and thickest Arctic sea ice is disappearing at a faster rate than the younger and thinner ice at the edges of the Arctic Ocean's floating ice cap.

Earthworms to blame for decline of ovenbirds in northern Midwest forests

Posted: 29 Feb 2012 11:22 AM PST

A recent decline in ovenbirds, a ground-nesting migratory songbird, in forests in the northern Midwest United States is being linked by scientists to a seemingly unlikely culprit: earthworms.

How insects 'remodel' their bodies between life stages

Posted: 29 Feb 2012 11:22 AM PST

How is it that an insect can remake itself so completely that it appears to be a different creature altogether, not just once, but several times in its lifetime? Working with fruit flies scientists found that genes whose expression is induced by pulses of steroid hormone are key to these transformations. A similar mechanism may underlie puberty -- the human analog of metamorphosis.

Blockade of learning and memory genes may occur early in Alzheimer's disease: Treatable in mice

Posted: 29 Feb 2012 11:21 AM PST

A repression of gene activity in the brain appears to be an early event affecting people with Alzheimer's disease, researchers have found. In mouse models of Alzheimer's disease, this epigenetic blockade and its effects on memory were treatable.

Astronomers rediscover life on Earth -- by looking at the moon

Posted: 29 Feb 2012 11:08 AM PST

By observing the Moon using ESO's Very Large Telescope, astronomers have found evidence of life in the universe -- on Earth. Finding life on our home planet may sound like a trivial observation, but the novel approach may lead to future discoveries of life elsewhere in the universe.

Oldest fossilized forest: Entire fossil forest dating back 385 million years unearthed

Posted: 29 Feb 2012 11:08 AM PST

Researcher who previously found evidence of the Earth's earliest tree, has gone one step further. The research team has now unearthed and investigated an entire fossil forest dating back 385 million years.

When continents collide: New twist to 50-million-year-old tale

Posted: 29 Feb 2012 11:06 AM PST

Fifty million years ago, India slammed into Eurasia, a collision that gave rise to the tallest landforms on the planet, the Himalaya Mountains and the Tibetan Plateau.

Genetics of endangered African monkey suggest troubles from warming climate

Posted: 29 Feb 2012 07:52 AM PST

A rare and endangered monkey in an African equatorial rainforest is providing a look into our climatic future through its DNA. Its genes show that wild drills, already an overhunted species, may see a dramatic population decline if the forest dries out and vegetation becomes sparser amid warming temperatures, researchers report.

Winning makes people more aggressive toward the defeated

Posted: 29 Feb 2012 07:47 AM PST

In this world, there are winners and losers – and, for your own safety, it is best to fear the winners.

New model provides different take on planetary accretion: Collapse may take place in 3-D cold dust cloud

Posted: 29 Feb 2012 06:19 AM PST

The prevailing model for planetary accretion assumes that the solar system's planets formed in an extremely hot, two-dimensional disk of gas and dust, post-dating the sun. Scientists now propose a radically different model, in which collapse takes place in a cold, three-dimensional dust cloud.

Inherited epigenetics produced record fast evolution

Posted: 29 Feb 2012 06:18 AM PST

The domestication of chickens has given rise to rapid and extensive changes in genome function. Scientists have established that the changes are heritable, although they do not affect the DNA structure.

T. rex has most powerful bite of any terrestrial animal ever

Posted: 28 Feb 2012 05:38 PM PST

Research, using computer models to reconstruct the jaw muscle of Tyrannosaurus rex, has suggested that the dinosaur had the most powerful bite of any living or extinct terrestrial animal.