Science & Technology
In the early '90s, Elizabeth Behrman, a physics professor at Wichita State University, began working to combine quantum physics with artificial intelligence - in particular, the then-maverick technology of neural networks. Most people thought she was mixing oil and water. "I had a heck of a time getting published," she recalled. "The neural-network journals would say, 'What is this quantum mechanics?' and the physics journals would say, 'What is this neural-network garbage?'"
Today the mashup of the two seems the most natural thing in the world. Neural networks and other machine-learning systems have become the most disruptive technology of the 21st century. They out-human humans, beating us not just at tasks most of us were never really good at, such as chess and data-mining, but also at the very types of things our brains evolved for, such as recognizing faces, translating languages and negotiating four-way stops. These systems have been made possible by vast computing power, so it was inevitable that tech companies would seek out computers that were not just bigger, but a new class of machine altogether.

We all have consciousness, but explaining why and how our thoughts occur has always been a scientific mystery
New research has linked a human gene responsible for conscious thought to a virus that was spread in the early days of humanity.
Two papers published in the Cell journal discuss the origins of the Arc gene, which packages up genetic information and sends it around nerve cells in little virus-style capsules.
These packages of information are believed to be critical to how our nerves communicate and could be responsible for our thoughts.
Elissa D. Pastuzyn, who authored one of the studies, said: "Evolutionary analysis indicates that Arc is derived from a vertebrate lineage of Ty3/gypsy retrotransposons, which are also ancestors to retroviruses."
Today at Cape Canaveral, SpaceX launched a new sensor to the International Space Station named TSIS-1. Its mission: to measure the dimming of the sun's irradiance. It will replace the aging SORCE spacecraft. NASA SDO reports that as the sunspot cycle plunges toward its 11-year minimum, NASA satellites are tracking a decline in total solar irradiance (TSI).
Across the entire electromagnetic spectrum, the sun's output has dropped nearly 0.1% compared to the Solar Maximum of 2012-2014. This plot shows the TSI since 1978 as observed from nine previous satellites:
Comment: The increase in cosmic radiation is bad news for the Earth:
- Cosmic rays reaching Earth increase 10% in just one month as Solar activity continues decreasing
- Space weather causes airline pilots, passengers to be exposed to radiationEarth's Exposure to Radiation Stresses Biodiversity, Study Says
- Record rain and snow as Cosmic Rays increase; biased media only focuses on heat
From SDO:
The sun has had no sunspots for almost two weeks (as of Feb. 1, 2018) and just has a single, tiny one that appeared on Jan. 31, 2018. The video shows a rotating sun in filtered light for the past week, but it is even hard to tell the sun is rotating since there are just about no features. Even the small spot that appears on the 31st is hard to see. This spotless period is a prelude to the approaching period of solar minimum next year, when the sun's activity will be at the low end of its 11-year cycle. Credit: Solar Dynamics Observatory, NASA.
Movies
- Spotless_week_big.mp4 - mp4
- spotless_week_sm.mp4 - mp4

Former U.S. Vice President Al Gore attends Unlocking Financing for Climate Action session during the IMF/World Bank spring meetings in Washington, U.S., April 21, 2017.
"And I know they don't work. They haven't worked in the past. They don't work now. And it's hard to imagine when, if ever, they'll work in the foreseeable future," Happer said in a video produced by PragerU.
In the video, Happer argues that even supercomputers used to predict the weather and forecast future global warming aren't strong enough to capture the complexity of Earth's atmosphere, including cloud cover and natural ocean cycles.
"That's why, over the last 30 years, one climate prediction after another - based on computer models - has been wrong," Happer said in the video. "They're wrong because even the most powerful computers can't solve all the equations needed to accurately describe climate."
Comment:
- 97% climate change consensus? Meteorologists don't think so
- Math errors discovered in climate model shows UN climate panel overestimated global warming by at least 10x
- Global warming is greatest scam in history claims founder of Weather Channel
- Ice age cometh: 'Natural solar cycles will bring worst cold in 200 years'
To use it, you need a constant, "Newton's constant," also called the "gravitational constant," usually denoted G. You can determine G to reasonable accuracy with a few simple measurements. Once you have fixed the gravitational constant, you can apply Newton's law to all kinds of different situations: falling apples, orbiting planets, launching rockets, etc. All with only one constant!
This ability to explain many superficially different processes is what makes natural laws so powerful. Newton's contemporaries were suitably impressed.
After Newton came up with his equation, he could have reasoned: "Since I don't know this constant's value but have to measure it, the constant could have any value. So, there must be a universe for each different value. I conclude that we live in one of infinitely many universes - one for each value of the gravitational constant. I will call this collection of universes the "multiverse.""
But he didn't.
Newton was famously minimalistic with his assumptions and even refused to speculate whether there were deeper reasons for his law of gravity, arguing this was unnecessary. "Hypotheses non fingo," he wrote, "I feign no hypotheses."
But that was then.

False color image from the HiRISE instrument aboard NASA's Mars Reconnaissance Orbiter shows the diversity of rocks exhumed from the Martian subsurface meteor impact, Nili Fossae area. It contains rocks that were altered by fluids in the Martian crust billions of years ago.
For the last 2.5 billion years, surface life on Earth has thrived largely due to the evolution of photosynthesis. Surface life is abundant and very successful because of the availability of sunlight, surface water, generally moderate climate conditions, and the protection of our magnetic field. But the planet Mars would have never experienced such habitable conditions at the surface. Michalski and colleagues published results in Nature Astronomy showing that the climate of Mars has probably been extremely cold and dry most of the time. They argue that the familiar aqueous features on Mars included widespread, weathered soil horizons, could have formed in geologically short climate "excursions." In other words, Mars was cold and dry throughout its history and only had abundant liquid water at its surface during short episodes of climate change.

Fig. 1. The band of Jupiter’s atmosphere wrapped around its equator, increases its apparent equatorial diameter.
Jupiter = 0.06487, Saturn = 0.09796, Uranus = 0.02293, Neptune = 0.01708, Pluto = 0.0000
The difference between the high oblateness of Jupiter and Saturn versus Uranus, Neptune and Pluto has resulted in planetary scientists deciding that the former are 'gas giants' and the other three 'ice giants'. However, they are all ice giants - methane gas hydrate (MGH) is a form of ice which forms in the presence of ample methane. The impact on Jupiter 6,000 years BP is what made both Jupiter and Saturn appear to be gaseous.
In a study published in Nature Physics, a strange substance known as "superionic ice" is described as such - not quite water, not quite ice, as conductive as metal, and almost molten in its texture, according to Raymond Jeanloz, a co-author of the study and professor at University of California, Berkeley.
While its existence had been suspected for some time, it was finally created and observed at the Lawrence Livermore National Lab.
First experimental evidence for #superionic ice: After decades of experiments, researchers have observed that under high temperatures and extreme pressures, water takes on a novel form and becomes superionic.
"Documentation of endangered minority languages such as Jedek is important, as it provides new insights into human cognition and culture", says Joanne Yager, doctoral student at Lund University.
"Jedek is not a language spoken by an unknown tribe in the jungle, as you would perhaps imagine, but in a village previously studied by anthropologists. As linguists, we had a different set of questions and found something that the anthropologists missed", says Niclas Burenhult, Associate Professor of General Linguistics at Lund University, who collected the first linguistic material from Jedek speakers.
The language is an Aslian variety within the Austroasiatic language family and is spoken by 280 people who are settled hunter-gatherers in northern Peninsular Malaysia.
The researchers discovered the language during a language documentation project, Tongues of the Semang, in which they visited several villages to collect language data from different groups who speak Aslian languages.
The discovery of Jedek was made while they were studying the Jahai language in the same area.

Physicists shocked and compressed water inside a diamond anvil with state of the art lasers.
Researchers from Lawrence Livermore National Lab at the University of California carried out a series of "laser-driven shock-compression experiments" and shared their findings in a study published in Nature Physics journal on Monday.
The superionic ice is "a really strange state of matter," the study's lead author Marius Millot told the New York Times. 'Superionic' refers to water that has properties of both solid and liquid, which occurs when water is placed under extreme pressure and heat.
"These are very challenging experiments, so it was really exciting to see that we could learn so much from the data - especially since we spent about two years making the measurements and two more years developing the methods to analyze the data," Millot said.
The ice was created by compressing water between two diamonds at a level of pressure 25,000 times greater than air on Earth. The water turns into a kind of ice called ice VII, which is solid at room temperature, and 60 percent denser than water. The compressed ice was then hit with a laser light, causing intense shockwaves, as well as increasing temperatures to thousands of degrees.
The heat melts the bonds between hydrogen and oxygen atoms, while the high pressure allows for the oxygen atoms (which are heavier than hydrogen) to be kept in a solid stack as the liquid hydrogen ions flow through.










Comment: For more on the links between viruses and human evolution, see: