There has been talk out thar in the wildlands of Twitter from people who don't believe the evidence that the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is real.

Has the 'the COVID virus' ever been isolated in cell culture, visualised by electron microscopy, reacted with antibodies, genetically sequenced and otherwise characterised in many samples collected from people with coronavirus disease 19 (COVID-19) all over the world during the past nine months?

Sigh, yes, and yes the 'COVID virus' is real. Here are a few of the scientific endeavours that show this virus has been isolated from clinically diagnosed, ill and laboratory-confirmed human COVID-19 cases.

False claims fueling the widespread delusion that SARS-CoV-2 doesn't exist are harming efforts to combat the authoritarian responses to COVID-19.

For months, I have been continually confronted with the belief held by many within my own community of readers that SARS-CoV-2, the virus that causes COVID-19, has not even been proven to exist.

I would much prefer to spend my time fact-checking the self-proclaimed "fact checkers" that are censoring factual information while hypocritically misinforming the public. But there's one claim in particular that I've been faced with repeatedly that really needs to be put to rest because it is serving only to legitimize the "fact checker" narrative that opponents of authoritarian "lockdown" measures are spreading misinformation.

The specific claim is that the Centers for Disease Control and Prevention (CDC) has admitted that SARS-CoV-2 has not been isolated — in other words, that it has not been proven to exist.

The "smoking gun" document in which the CDC ostensibly admitted that the virus hasn't been isolated is titled "CDC 2019-Novel Coronavirus (2019-nCov) Real-Time RT-PCR Diagnostic Panel". It is published on the website of the Food and Drug Administration (FDA).

Yesterday, we noted that in a debate with four other philosophers of physics, Charles Sebens argued that there are no particles, everything is fields.

A friend now writes to remind us that physics great Max Planck had quite immaterial views on the nature of the universe:

Max Planck: Gentlemen, as a physicist who all his life, within the most sober and rational science, has been devoted to the study of matter, I am certain to be free of the suspicion of being a dreamer, and so I say after my research on the atom; matter as such does not exist.

All matter originates and exists only by virtue of a force that brings the parts of the atom in vibration, and keeps the smallest solar system of the universe together. As there in the entire universe does not exist an intelligent force, nor an eternal force- man has not yet succeded in inventing the perpetuum mobile- so must we assume behind this force the existence of a conscious intelligent spirit. This spirit is the basis of all matter. The visible but impermanent matter is not the reality and truth- because without spirit, matter wouldn't exist at all- but the invisible, immortal spirit is the truth. Because every spirit belongs to a being, we are forced to assume it to be a spiritual being. Because spiritual beings do not come about by themselves, but must be created, I will not hesitate in fact, to call this secretive creator, like people of all cultures through millennia has done, God. Thereby moves the physicist who dealt with matter, from the realm of stuff to the realm of the spirit. And so is our task ended, and we must then pass on the research into the hands of the philosophers. - Lecture, 'Das Wesen der Materie' [The Essence/Nature/Character of Matter], Florence, Italy (1944). Archiv zur Geschichte der Max-Planck-Gesellschaft, Abt. Va, Rep. 11 Planck, Nr. 1797. Excerpt in Gregg Braden, The Spontaneous Healing of Belief: Shattering the Paradigm of False Limits (2009), 334-35.

Astronomers are using tree rings as a historical record of solar activity — and they've found that the Sun was much more active in the past.

Our Sun is not the faithfully constant light source it appears to be. Solar activity varies in a fairly regular cycle of 11 years, most notably in the periodic rise and fall in the number of sunspots. Though German astronomer Samuel Heinrich Schwabe discovered the cycle in the 19th century, sunspot observations commenced about 400 years ago with Galileo Galilei, and the solar cycle has been traced back to these early observations.

Now, a team of scientists based in Switzerland has successfully reconstructed the 11-year Schwabe cycle all the way back to the year AD 969, using the Sun's imprint on ancient trees on Earth. Their report appears in Nature Geoscience.

An international team of researchers has found what they believe to be the pathogen that has been killing chimpanzees at a Sierra Leone sanctuary for approximately 15 years. In their paper published in the journal Nature Communications, the group describes their study of multiple samples of chimp tissue retrieved from some of the dead chimps and what they have found thus far.

Approximately 15 years ago, workers at Sierra Leone's Tacugama Chimpanzee Sanctuary began to see chimps in their sanctuary become ill from a new and mysterious ailment — alarmingly, every chimp that became ill died. In the beginning, the team thought that they had more than one pathogen on their hands because, for some chimps, the main symptoms were gastrointestinal stress while, for others, symptoms were clearly neurological. Over time, the team became convinced it was a single pathogen as they saw increasing numbers of chimps with both types of symptoms.

An upsurge of matter from deep beneath the Earth's crust could be pushing the continents of North and South America further apart from Europe and Africa, new research has found.

The plates attached to the Americas are moving apart from those attached to Europe and Africa by four centimetres per year. In between these continents lies the Mid-Atlantic Ridge, a site where new plates are formed and a dividing line between plates moving to the west and those moving to the east; beneath this ridge, material rises to replace the space left by the plates as they move apart.

Conventional wisdom is that this process is normally driven by distant gravity forces as denser parts of the plates sink back into the Earth. However, the driving force behind the separation of the Atlantic plates has remained a mystery because the Atlantic ocean is not surrounded by dense, sinking plates.

Researchers at the University of Maryland have turned ordinary sheets of wood into transparent material that is nearly as clear as glass, but stronger and with better insulating properties. It could become an energy efficient building material in the future.

Wood is made of two basic ingredients: cellulose, which are tiny fibres, and lignin, which bonds those fibres together to give it strength.

Tear a paper towel in half and look closely along the edge. You will see the little cellulose fibres sticking up. Lignin is a glue-like material that bonds the fibres together, a little like the plastic resin in fibreglass or carbon fibre. The lignin also contains molecules called chromophores, which give the wood its brown colour and prevent light from passing through.

Early attempts to make transparent wood involved removing the lignin, but this involved hazardous chemicals, high temperatures and a lot of time, making the product expensive and somewhat brittle. The new technique is so cheap and easy it could literally be done in a backyard.


Starting with planks of wood a metre long and one millimetre thick, the scientists simply brushed on a solution of hydrogen peroxide using an ordinary paint brush. When left in the sun, or under a UV lamp for an hour or so, the peroxide bleached out the brown chromophores but left the lignin intact, so the wood turned white.

Changes in Mar's geography always attract significant scientific and even public attention. A hope for signs of liquid water (and therefore life) is likely one of the primary driving forces behind this interest. One particularly striking changing feature is the Recurring Slope Lineae (RSL) originally found by the Mars Reconnaissance Orbiter (MRO). Now, scientists at the SETI Institute have a modified theory for where those RSLs might develop - a combination of water ice and salt just under the Martian surface.

According to the SETI team, led by Senior Research Scientist Janice Bishop, there is a two step process going on that creates these RSLs. First, underground water ice must mix with a combination of chlorine salts and sulfates to create a type of slurry that destabilizes the regolith in the area. Then, the dry wind and dust storms of Mars take over, blowing the destabilized material into new patterns across the Martian surface.

The Arctic Ocean was once a pool of fresh water capped with an ice shelf half as thick as the Grand Canyon is deep.

If that's hard to envision, don't despair. Scientists were surprised at the discovery, published Wednesday (Feb. 3) in the journal Nature, as well. The trick to envisioning this odd arrangement is to think about the relationship between ice sheets and the ocean. When ice sheets melt, they dump water into the ocean, raising the sea level. But when ice sheets grow, as they have during Earth's glacial periods, sea level drops.


Now, new research shows that in these eras of lower sea level, the Arctic Ocean's connection to the Pacific and Atlantic was very limited, with Greenland, Iceland, and northern Europe and Siberia acting as the rim of a bowl containing the Arctic. (Ice itself could have further restricted circulation.) Land and sea alike were overlain with an ice sheet 2,952 feet (900 meters) thick.

The modern world is powered by electrical circuitry on a "chip" — the semiconductor chip underpinning computers, cell phones, the internet, and other applications. In the year 2025, humans are expected to be creating 175 zettabytes (175trillion gigabytes) of new data. How can we ensure the security of sensitive data at such a high volume? And how can we address grand-challenge-like problems, from privacy and security to climate change, leveraging this data, especially given the limited capability of current computers?

A promising alternative is emerging quantum communication and computation technologies. For this to happen, however, it will require the widespread development of powerful new quantum optical circuits­; circuits that are capable of securely processing the massive amounts of information we generate every day. Researchers in USC's Mork Family Department of Chemical Engineering and Materials Science have made a breakthrough to help enable this technology.

While a traditional electrical circuit is a pathway along which electrons from an electric charge flow, a quantum optical circuit uses light sources that generate individual light particles, or photons, on-demand, one-at-a-time, acting as information carrying bits (quantum bits or qubits). These light sources are nano-sized semiconductor "quantum dots"-tiny manufactured collections of tens of thousands to a million atoms packed within a volume of linear size less than a thousandth of the thickness of typical human hair buried in a matrix of another suitable semiconductor.