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The rapidly increasing data traffic is placing ever greater demands on the capacity of communication systems. A research team now introduces a new amplifier that enables the transmission of ten times more data per second than those of current fiber-optic systems. This amplifier, which fits on a small chip, holds significant potential for various critical laser systems, including those used in medical diagnostics and treatment.

Rsearchers have developed the first wearable device for measuring gases emitted from and absorbed by the skin. By analyzing these gases, the device offers an entirely new way to assess skin health, including monitoring wounds, detecting skin infections, tracking hydration levels, quantifying exposure to harmful environmental chemicals and more.

Preparing catalysts by sending hot, steamy car exhaust over them could improve their efficiency and reduce the amount of rare and expensive metals required in vehicle catalytic converters and many other emission control and industrial processes.

A research team has developed an advanced delivery system that transports gene-editing tools based on the CRISPR/Cas9 gene-editing system into living cells with significantly greater efficiency than before. Their technology, ENVLPE, uses engineered non-infectious virus-like particles to precisely correct defective genes -- demonstrated successfully in living mouse models that are blind due to a mutation. This system also holds promise for advancing cancer therapy by enabling precise genetic manipulation of engineered immune cells making them more universally compatible and thus more accessible for a larger group of cancer patients.

Today’s Jesus and Mo strip, called “well2”, is a reboot, and came with this note: “A resurrection today from 2007. Poor Twelfth Imam! Let’s hope he’s got plenty of reading material.

Yep, there has been a long wait. As Wikipedia says of Muhammad al-Mahdi, the Twelfth Imam:

Muhammad al-Mahdi (Arabic: محمد بن الحسن المهدي, romanized: Muḥammad ibn al-Ḥasan al-Mahdī) is believed by the Twelver Shia to be the last of the Twelve Imams and the eschatological Mahdi, who will emerge in the end of time to establish peace and justice and redeem Islam.

Hasan al-Askari, the eleventh Imam, died in 260 AH (873–874), possibly poisoned by the Abbasids. Immediately after his death, his main representative, Uthman ibn Sa’id al-Asadi, claimed that the eleventh Imam had an infant son named Muhammad, who was kept hidden from the public out of fear of Abbasid persecution. Uthman also claimed to represent Muhammad, who had entered a state of occultation. Other local representatives of al-Askari largely supported these assertions, while the Shia community fragmented into several sects over al-Askari’s succession. All these sects, however, are said to have disappeared after a few decades except the Twelvers, who accept the son of al-Askari as the twelfth and final Imam in occultation.

“Occulatation” is like religious hibernation, and according to Wikipedia the Twelvers constitute “about 90% of all Shi’a Muslims”, or number between 140 million and 180 million people. And, like Christians, they’ve waited a long time for their Messiah to appear. And they’ll wait forever.

Reader J Monaghan from Australia sends us some urban birds from his area. It must be nice to live in Oz and see these around your house! Monaghan’s captions and IDs are indented, and you can enlarge the photos by clicking on them. 

Urban Birds

These photos were taken in my garden and neighbouring streets in the Lake Macquarie area of New South Wales, one of Australia’s largest coastal salt water lakes. As we live in a “bird corridor” with many native and introduced different birds, we have had to learn to co-exist.

Australian magpie (Gymnorhina tibicen). During their August to October breeding season they become  protective of their nests and young, swooping on and sometimes injuring unwary passers by. Cyclists resort to sticking plastic ties and pipe cleaners in their helmets to protect from direct injury:

Female Mallard (Anas platyrhynchos) are an introduced bird. Several families live near a creek at the bottom of my street and we all slow down and drive slowly past them as they take their time waddling off:

Mallards are not particularly shy and are happy to visit. If we walk and talk slowly, they will hang around for quite a while:

Australian Wood Duck (Chenonetta jubata) are common in our area, particularly around creeks and parks, as have adapted well to the urban environment:

Eastern Rosella (Platycercus eximius). The only two photos I have of these birds, as not only do they rarely come out into the open but they are skittish and fly away at the sight of my creeping cats:

Eastern Rosella. My second photo, just before it took flight:

Kookaburra (Dacelo novaeguineae, also known as the laughing kookaburra). A frequent visitor to my friend’s pottery workshop, where it checks out her latest creations. Their raucous call can be sleep shattering at 6am:

Little Corellas (Cacatua sanguinea). Increasingly common in urban areas and often seen feeding on lawns, shrubs and playing fields. They are very social and can be boisterous and playful with each other. These two stayed still long enough for me to photograph them:

Masked Lapwing (Vanellus miles novaehollandiae). May swoop during breeding season but rare actual contact (unlike the magpie!). They nest in small depressions in the ground, and sometimes beside roads or in the roofs of buildings. We have to take care not to disturb their nests, which may require mowing around them or relocating them if they are in a particularly unsafe place:

Masked Lapwing couple on guard duty:

Sulphur-crested Cockatoo (Cacatua galerita). These birds are highly intelligent and comical, using loud, raucous calls and screeches to call out to each other. They drown out converstion when a flock flies over, so best to just wait until they fly off again:

The Sulphur-crested Cockatoo on the right spotted me trying to photograph it, raising its crest in reaction to my threat:

 Australian white ibis (Threskiornis molucca). Though they have many names (Tip turkey, Dumpster chook, Rubbish raptor), they are most commonly known as Bin Chickens, due to their ability to survive in cities by scavenging our leftovers, as their wetlands have been increasingly lost.

Australian White Ibis. Wary enough of humans that I couldn’t get close enough to take a better photo of them but brave enough to take over the local dog park:

Astronomers are on the hunt for those in-between black holes, not the small stellar ones or the supermassive ones, but something right in the middle. Recently, a group of scientists spotted a star travelling at high velocity out of the globular cluster M15. This speedy star got kicked out about 20 million years ago and is now zooming along at an incredible 550 km/s, fast enough that it's actually escaping our entire Galaxy! The researchers think this stellar ejection might have happened because of some cosmic game of pool - basically a three-body interaction involving one of those middle-sized black holes they've been trying to find!

The search for life in our Solar System, however primitive, past or present has typically focussed upon Mars and a select few moons of the outer Solar System. Saturn’s moon Titan for example has all the raw materials for life scattered across its surface, rivers and lakes of methane along with rock and sand containing water ice. There’s even a sprinkling of organic compounds too but according to a new study, Titan can probably only support a few kilograms of biomass overall, that’s just one cell per litre of water across Titan’s ocean.

The core mission of SBM comes down to a few things – examining the complex relationship between scientific evidence and healthcare, exploring issues of how optimally to regulate health care and health products, and fighting misinformation. Over the years I think we have made some solid strides on the first category. The medical infrastructure has been trending increasing towards higher standards of […]

The post The Misinformation Wars first appeared on Science-Based Medicine.

What kind of mission would be best suited to sample the plumes of Saturn’s ocean world, Enceladus, to determine if this intriguing world has the ingredients to harbor life? This is what a recent study presented at the 56th Lunar and Planetary Science Conference hopes to address as a team of researchers investigated the pros and cons of an orbiter or flyby mission to sample Enceladus’ plumes. This study has the potential to help scientists, engineers, and mission planners design and develop the most scientifically effective mission to Enceladus with the goal of determining its potential habitability.

When it comes to upgrading electrical and broadband infrastructure, new research shows that a 'dig once' approach is nearly 40% more cost effective than replacing them separately. The study also found that the greatest benefit comes from proactively undergrounding lines that are currently above ground, even if lines haven't reached the end of their usefulness.

When it comes to upgrading electrical and broadband infrastructure, new research shows that a 'dig once' approach is nearly 40% more cost effective than replacing them separately. The study also found that the greatest benefit comes from proactively undergrounding lines that are currently above ground, even if lines haven't reached the end of their usefulness.

In the great tug-of-war between the Sun and its planets, Jupiter, Saturn, and Uranus are much more susceptible to solar activities than scientists thought. Jupiter itself has an interesting reaction as it gets pummeled several times a month by solar wind bursts. They compress its magnetosphere and create a huge "hot spot" with temperatures over 500C.

Researchers report their discovery of fluorescent pigments in the feathers of Long-eared Owls, that can only be seen by humans with the help of ultraviolet light.

Up until recently, astronomy was reliant entirely on electromagnetic waves. While that changed with the confirmation of gravitational waves in 2016, astronomers had developed fundamental frameworks in the electromagnetic spectrum by that point. One critical framework broke the spectrum into three categories based on their wavelength - infrared, optical, and ultraviolet. To astronomers, each of these categories was created by a different physical phenomenon, and monitoring each gave its insight into what that phenomenon was doing, no matter what the other spectra said. This was especially prevalent when researching galaxies, as infrared and optical wavelengths were used to analyze different aspects of galaxy formation and behavior. However, Christian Kragh Jespersen of Princeton's Department of Astrophysics and his colleagues think they have found a secret that breaks the entire electromagnetic framework - the optical and infrared are connected.

It’s easy to measure the rotation rate of terrestrial planet by tracking surface features but the gas and ice giants pose more of a problem. Instead, previous studies have relied upon indirect measures like measuring the rotation of their magnetic fields. Now a team of astronomers have used the Hubble Space Telescope to refine the rotation rate of Uranus with an incredible level of accuracy. This time though, instead of studying the rotation of the magnetic field, they tracked aurora to measure one rotation!

We all know that black holes can devour stars. Rip them apart and consume their remnants. But that only happens if a star passes too close to a black hole. What if a star gets close enough to a star to experience strong tidal effects, but not close enough to be immediately devoured? This scenario is considered in a recent paper on the arXiv.

This article was originally published in Skeptic in 1997.

Presented here for the first time are the complete texts of two letters that Einstein wrote regarding his lack of belief in a personal god.

Just over a century ago, near the beginning of his intellectual life, the young Albert Einstein became a skeptic. He states so on the first page of his Autobiographical Notes (1949, pp. 3–5):

Thus I came—despite the fact I was the son of entirely irreligious (Jewish) parents—to a deep religiosity, which, however, found an abrupt ending at the age of 12. Through the reading of popular scientific books I soon reached the conviction that much in the stories of the Bible could not be true. The consequence was a positively fanatic [orgy of] freethinking coupled with the impression that youth is intentionally being deceived… Suspicion against every kind of authority grew out of this experience, a skeptical attitude … which has never left me….

We all know Albert Einstein as the most famous scientist of the 20th century, and many know him as a great humanist. Some have also viewed him as religious. Indeed, in Einstein’s writings there is well-known reference to God and discussion of religion (1949, 1954). Although Einstein stated he was religious and that he believed in God, it was in his own specialized sense that he used these terms. Many are aware that Einstein was not religious in the conventional sense, but it will come as a surprise to some to learn that Einstein clearly identified himself as an atheist and as an agnostic. If one understands how Einstein used the terms religion, God, atheism, and agnosticism, it is clear that he was consistent in his beliefs.

Part of the popular picture of Einstein’s God and religion comes from his well-known statements, such as:

“God is cunning but He is not malicious.” (Also: “God is subtle but he is not bloody-minded.” Or: “God is slick, but he ain’t mean.”) (1946)“God does not play dice.” (On many occasions.)“I want to know how God created the world. I am not interested in this or that phenomenon, in the spectrum of this or that element. I want to know His thoughts, the rest are details.” (Unknown date.)

It is easy to see how some got the idea that Einstein was expressing a close relationship with a personal god, but it is more accurate to say he was simply expressing his ideas and beliefs about the universe.

Figure 1

Einstein’s “belief” in Spinoza’s God is one of his most widely quoted statements. But quoted out of context, like so many of these statements, it is misleading at best. It all started when Boston’s Cardinal O’Connel attacked Einstein and the General Theory of Relativity and warned the youth that the theory “cloaked the ghastly apparition of atheism” and “befogged speculation, producing universal doubt about God and His creation” (Clark, 1971, 413–414). Einstein had already experienced heavier duty attacks against his theory in the form of anti-Semitic mass meetings in Germany, and he initially ignored the Cardinal’s attack. Shortly thereafter though, on April 24, 1929, Rabbi Herbert Goldstein of New York cabled Einstein to ask: “Do you believe in God?” (Sommerfeld, 1949, 103). Einstein’s return message is the famous statement:

“I believe in Spinoza’s God who reveals himself in the orderly harmony of what exists, not in a God who concerns himself with fates and actions of human beings” (103). The Rabbi, who was intent on defending Einstein against the Cardinal, interpreted Einstein’s statement in his own way when writing:

Spinoza, who is called the God-intoxicated man, and who saw God manifest in all nature, certainly could not be called an atheist. Furthermore, Einstein points to a unity. Einstein’s theory if carried out to its logical conclusion would bring to mankind a scientific formula for monotheism. He does away with all thought of dualism or pluralism. There can be no room for any aspect of polytheism. This latter thought may have caused the Cardinal to speak out. Let us call a spade a spade (Clark, 1971, 414).

Both the Rabbi and the Cardinal would have done well to note Einstein’s remark, of 1921, to Archbishop Davidson in a similar context about science: “It makes no difference. It is purely abstract science” (413).

The American physicist Steven Weinberg (1992), in critiquing Einstein’s “Spinoza’s God” statement, noted: “But what possible difference does it make to anyone if we use the word “God” in place of “order” or “harmony,” except perhaps to avoid the accusation of having no God?” Weinberg certainly has a valid point, but we should also forgive Einstein for being a product of his times, for his poetic sense, and for his cosmic religious view regarding such things as the order and harmony of the universe.

But what, at bottom, was Einstein’s belief? The long answer exists in Einstein’s essays on religion and science as given in his Ideas and Opinions (1954), his Autobiographical Notes (1949), and other works. What about a short answer?

In the Summer of 1945, just before the bombs of Hiroshima and Nagasaki, Einstein wrote a short letter stating his position as an atheist (Figure 1, above). Ensign Guy H. Raner had written Einstein from mid-Pacific requesting a clarification on the beliefs of the world famous scientist (Figure 2, below). Four years later Raner again wrote Einstein for further clarification and asked “Some people might interpret (your letter) to mean that to a Jesuit priest, anyone not a Roman Catholic is an atheist, and that you are in fact an orthodox Jew, or a Deist, or something else. Did you mean to leave room for such an interpretation, or are you from the viewpoint of the dictionary an atheist; i.e., “one who disbelieves in the existence of a God, or a Supreme Being?” Einstein’s response is shown in Figure 3.

Figure 2

Combining key elements from the first and second response from Einstein there is little doubt as to his position:

From the viewpoint of a Jesuit priest I am, of course, and have always been an atheist…. I have repeatedly said that in my opinion the idea of a personal God is a childlike one. You may call me an agnostic, but I do not share the crusading spirit of the professional atheist whose fervor is mostly due to a painful act of liberation from the fetters of religious indoctrination received in youth. I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our being.

I was fortunate to meet Guy Raner, by chance, at a humanist dinner in late 1994, at which time he told me of the Einstein letters. Raner lives in Chatsworth, California and has retired after a long teaching career. The Einstein letters, a treasured possession for most of his life, were sold in December, 1994, to a firm that deals in historical documents (Profiles in History, Beverly Hills, CA). Five years ago a very brief letter (Raner & Lerner, 1992) describing the correspondence was published in Nature. But the two Einstein letters have remained largely unknown.

“I have repeatedly said that in my opinion the idea of a personal God is a childlike one.” —Einstein

Curiously enough, the wonderful and well-known biography Albert Einstein, Creator and Rebel, by Banesh Hoffmann (1972) does quote from Einstein’s 1945 letter to Raner. But maddeningly, although Hoffmann quotes most of the letter (194–195), he leaves out Einstein’s statement: “From the viewpoint of a Jesuit Priest I am, of course, and have always been an atheist.”!

Hoffmann’s biography was written with the collaboration of Einstein’s secretary, Helen Dukas. Could she have played a part in eliminating this important sentence, or was it Hoffmann’s wish? I do not know. However, Freeman Dyson (1996) notes “…that Helen wanted the world to see, the Einstein of legend, the friend of school children and impoverished students, the gently ironic philosopher, the Einstein without violent feelings and tragic mistakes.” Dyson also notes that he thought Dukas “…profoundly wrong in trying to hide the true Einstein from the world.” Perhaps her well-intentioned protectionism included the elimination of Einstein as atheist.

Figure 3

Although not a favorite of physicists, Einstein, The Life and Times, by the professional biographer Ronald W. Clark (1971), contains one of the best summaries on Einstein’s God: “However, Einstein’s God was not the God of most men. When he wrote of religion, as he often did in middle and later life, he tended to … clothe with different names what to many ordinary mortals—and to most Jews—looked like a variant of simple agnosticism….This was belief enough. It grew early and rooted deep. Only later was it dignified by the title of cosmic religion, a phrase which gave plausible respectability to the views of a man who did not believe in a life after death and who felt that if virtue paid off in the earthly one, then this was the result of cause and effect rather than celestial reward. Einstein’s God thus stood for an orderly system obeying rules which could be discovered by those who had the courage, the imagination, and the persistence to go on searching for them” (19).

Einstein continued to search, even to the last days of his 76 years, but his search was not for the God of Abraham or Moses. His search was for the order and harmony of the world.

Bibliography

• Dyson, F. 1996. Forward In The Quotable Einstein (Calaprice, Alice, Ed. ) Princeton, New Jersey: Princeton University Press. 1996. (Note: The section “On Religion, God, and Philosophy” is perhaps the best brief source to present the range and depth of Einstein’s views.)
• Einstein, A. 1929. quoted in Sommerfeld (see below). 1949. Also as Telegram to a Jewish Newspaper, 1929; Einstein Archive Number 33–272.
• ___. 1946 and of unknown date. In Einstein, A Centenary Volume. (A. P. French, Ed.) Cambridge: Harvard Univ Press. 1979. 32, 73, & 67.
• ___. 1959 (1949). “Autobiographical Notes.” In Albert Einstein, Philosopher–Scientist. (Paul Arthur Schilpp, Ed.) New York: Harper & Bros.
• ___. 1950. Letter to M. Berkowitz, October 25,1950; Einstein Archive Number 59–215.
• ___. 1954. Ideas and Opinions. New York: Crown Pub.
• ___. on many occasions. In Albert Einstein, Creator and Rebel. (B. Hoffmann with the collaboration of Helen Dukas.) New York: The Viking Press.
• Hoffmann, B. (collaboration with Helen Dukas). 1972. Albert Einstein, Creator and Rebel. New York: The Viking Press.
• Raner, G.H. & Lerner, L. S. “Einstein’s Beliefs.” Nature, 358:102.
• Sommerfeld, A. 1949. “To Albert Einstein’s 70th Birthday.” In Albert Einstein, Philospher–Scientist. (Paul Arthur Schilpp, Ed.) New York: Harper & Bros. 1959. 99–105.
• Weinberg, S. 1992. Dreams of a Final Theory. New York: Pantheon Books. 245.

An investigation of the changing behaviour of a single quantum bit through time has uncovered a tantalising similarity to the geometry of three-dimensional space

Researchers completed one of the most comprehensive studies to date on the risks of using AI models to develop software. In a paper, they demonstrate how a specific type of error could pose a serious threat to programmers that use AI to help write code.