Tag: science

A new and very large study now suggests that — even though no one really knows why — acupuncture might actually be effective.

9:27 am

The uncertainty of science: A new and very large study now suggests that — even though no one really knows why — acupuncture might actually be effective.

The key mystery here is the lack of any explanation for why acupuncture seems to work. And without that explanation, a large number of doctors will justifiable still refuse to use it as a course of treatment.

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Astronomers have measured the most powerful magnetic field ever found around a star.

9:02 am

Astronomers have measured the most powerful magnetic field ever found around a star.

The star’s magnetic field is 20,000 times stronger than the Sun’s, and almost 10 times stronger than that detected around any other high-mass star. At about 35 times the Sun’s mass, the O-type star NGC 1624-2 lies in the open star cluster NGC 1624, about 20,000 light-years away in the constellation Perseus.

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Mars’ clay minerals might have been formed by volcanic processes, not standing liquid water as generally believed.

9:37 am

The uncertainty of science: Mars’ clay minerals might have been formed by volcanic processes, not standing liquid water as generally believed, according to a new study.

Data collected by orbiting spacecraft show Mars’ clay minerals may instead trace their origin to water-rich volcanic magma, similar to how clays formed on the Mururoa atoll in French Polynesia and in the Parana basin in Brazil. That process doesn’t need standing bodies of liquid water. “The infrared spectra we got in the lab (on Mururoa clays) using a reflected beam are astonishingly similar to that obtained on Mars by the orbiters,” lead researcher Alain Meunier, with the University of Poitiers in France, wrote in an email to Discovery News. The team also points out that some of the Mars meteorites recovered on Earth do not have a chemistry history that supports standing liquid water.

If correct, this alternative explanation would mean that Mars was not that wet in the past, and would have been far less likely of ever having sustained life.

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We have a choice

9:46 am

A website, ScienceDebate.org, submitted a wide range of questions to Barack Obama and Mitt Romney about their plans for science and technology, and the answers, shown in a side-by-side comparison, are interesting, though in general they demonstrate the ability of politicians to speak for a long time without saying much.

This ability to blather is especially apparent to their answers to the question 12: “What should America’s space exploration and utilization goals be in the 21st century and what steps should the government take to help achieve them?” Neither candidate adds much to what was said in the Republican and Democratic party platforms, making it obvious that neither really cares or knows that much about this subject.

Overall, however, the answers do reveal the basic and fundamental differences between the two candidates, which can be seen in their answers to the very first question about encouraging innovation:
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Another planet has been found in the habitable zone

9:06 am

Planets without end: Another planet has been found in the habitable zone.

Gliese 163c could have a size between 1.8 to 2.4 Earth radii, depending if it is composed mostly of rock or water, respectively. It receives on average 40% more light from its parent star than Earth from the Sun, making it hotter. In comparison, Venus receives 90% more light from the Sun than Earth. We do not know the properties of the atmosphere of Gliese 163c but, if we assume that it is a scaled up version of Earth’s atmosphere, then its surface temperature might be around 60°C [140°F]. Most complex life on Earth (plants, animals, and even humans) are not able to survive at temperatures above 50°C [122°F], however, plenty of extremophilic microbial life forms can thrive at those temperatures or higher.

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A new study of the Earth’s past climates has revealed that during warming periods the number of species multiplied.

4:01 pm

A new study of the Earth’s past climates has revealed that during warming periods the number of species multiplied.

The article spends a lot of time explaining that just because global warming in the past was beneficial for life does not mean that global warming today will be a good thing. Or to put it another way: “Absolutely not! We mustn’t think that! It can’t be! Never!!!! My fingers are in my ears! La-la-la-la-la-la-la-la-la-la!”

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The Forest Products Laboratory of the U.S. Forest Service has opened a $1.7 million pilot plant for the production of cellulose nanocrystals, which have the potential to be stronger, stiffer, and lighter than Kevlar or carbon fibers.

9:27 am

The Forest Products Laboratory of the U.S. Forest Service has opened a $1.7 million pilot plant for the production of cellulose nanocrystals, which have the potential to be stronger, stiffer, and lighter than Kevlar or carbon fibers.

It appears that the lab has been researching the useful properties of these nanocrystals, which is a good thing. However, I can’t help wondering why they are now building a production plant. Shouldn’t this be left to the private sector? What business is it of the Forest Service to be a producer of this product? It could be that the plant is aimed not at production but at figuring out how to make it affordable and practical, a goal that might make sense for a government agency to pursue. If not, however, it seems inappropriate for a government agency to use taxpayer dollars to run a facility aimed at selling a product to the private sector.

The article, as well as the lab’s webpage, do not make this clear.

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New Horizons — on its way to Pluto — will take a look at a different Kuiper Belt object in January 2015.

2:46 pm

New Horizons — on its way to Pluto — will take a look at a different Kuiper Belt object in January 2015.

The encounter will take place at a range of about 75 million km, a distance somewhat subject to change depending on how the probe makes its course correction. At such a great distance, New Horizons will not be able to discern features on the surface of the KBO, nor will it be able to make spectroscopic observations to try to determine the composition of the surface material.

However, New Horizons will be in an excellent position to look for small, close-in moons around the object. It will also be in a position to observe the object’s phase curve, which is a measure of how the reflectivity of the surface changes as a function of viewing angle. This will reveal a great deal about the fluffiness of the surface material (note – fluffiness is a technical term meaning, roughly, “the opposite of dense”). These two observations cannot be made from Earth, even with the most powerful telescopes available.

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Scientists have determined that the shape of a beer glass can influence how much beer you drink.

6:40 pm

Science marches on! Scientists have determined that the shape of a beer glass can influence how much beer you drink.

After watching video of both sessions and recording how much time it took for the drinkers to finish their beer or sodas, Attwood’s team found that one group consistently drank much faster than the others: the group drinking a full glass of lager out of curved flute glasses. In a paper published this month in PLoS ONE, the team reports that whereas the group with straight glasses nursed their 354 milliliters of lager for about 13 minutes, the group with the same amount of beer served in curved glasses finished in less than 8 minutes, drinking alcohol almost as quickly as the soda-drinkers guzzled their pop. However, the researchers observed no differences between people drinking 177 milliliters of beer out of straight versus fluted glasses.

The last sentence reveals the large amount of uncertainty that surrounds this important research.

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At 4:05 am last night the two Radiation Belt Storm Probes (RBSP), designed to study the Van Allen radiation belts, were successfully placed in orbit by an Atlas 5 rocket.

8:46 am

At 4:05 am last night the two Radiation Belt Storm Probes (RBSP), designed to study the Van Allen radiation belts, were successfully placed in orbit by an Atlas 5 rocket.

I am sure these two spacecraft will do good research and find out things about the Van Allen radiation belts that we will need to know when humans start traveling through them routinely. However, I must say that their name, the Radiation Belt Storm Probes, usually abbreviated as RBSP, is probably the worst name NASA has ever devised for a spacecraft: Impossible to remember, boring to hear, and completely forgettable. Other than that, it’s a public relations winner.

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