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Theoretical physicist: Present phase of physics “not normal” – but stagnation, not crisis

Theoretical physicist Sabine Hossenfelder, author of Lost in Math: How Beauty Leads Physics Astray, acknowledges the seriousness of the situation but isn’t sure that the term “crisis” describes the current situation well: I think stagnation describes it better. And let me be clear that the problem with this stagnation is not with the experiments. The problem is loads of wrong predictions from theoretical physicists. The problem is also not that we lack data. We have data in abundance. But all the data are well explained by the existing theories – the standard model of particle physics and the cosmological concordance model. Still, we know that’s not it. The current theories are incomplete. So what would she change? I have spelled out Read More ›

Is cosmology “in crisis” over how to measure the universe?

We are told that the Standard Model just doesn’t work: Every night, astronomers post new ideas to arXiv, the open access publishing site. Cosmologists, in particular, use arXiv to engage in timely back-and-forths that formal journals don’t permit. “We’re just holding on for dear life, trying to keep up with what’s coming out,” says Scolnic. And trying to figure out why the Hubble constant calculations don’t match, where they’ve gone wrong, where they go from here, and how our conception of the universe might change from that new vantage point. Something big may be about to happen to cosmology. It’s easy to see where the cosmologists are coming from, in their glee at the possibility that they’ve been wrong about Read More ›

Reviewer: Human Zoos film prompts some hard questions

A reviewer of the new documentary Human Zoos: America’s Forgotten History of Scientific Racism poses some questions he hopes will be broadly discussed: – How was it that people who considered themselves Christians could troop through exhibitions, such as at the 1904 St. Louis World’s Fair, and gawk at other groups of people exhibited like animals? Just because they came from more “primitive” cultures, such as the Philippines’? – How could thousands of church-going New Yorkers, over several sold-out weeks, go to the Bronx Zoo to gawk at Ota Benga, an African pygmy kidnapped from his faraway home, and displayed in a cage with orangutans, as the “missing” link in evolution? (After protests from black clergymen, he was eventually released, Read More ›

Is Darwin’s “abominable mystery” of flowers partly solved by a recent discovery?

The beautifully-preserved fossil found in amber from 99 million years ago belongs to the large, diverse Pentepetalae clade: Together with contemporaneous flowers and fruits, the researchers say, Lijinganthus indicates that core eudicots flourished on Earth about 100 million years ago, although did not dominate vegetation until about 20 million years later, the mid-Cretaceous. “Various molecular clocks indicate that angiosperms and eudicots have a significantly earlier origin than the earliest fossil record indicates,” the authors write.Nick Carne, “Darwin’s ‘abominable mystery’ more apparent than real” at Cosmos A perfect flower in a mid-Cretaceous (early Cenomanian) Myanmar amber is described as Lijinganthus revoluta gen. et sp. nov. The fossil flower is actinomorphic and pentamerous, including calyx, corolla, stamens, and gynoecium. The sepals are Read More ›

Michael Ruse update: “Morality is just an aid to survival and reproduction…

. . . And any deeper meaning is illusory.” Reader Ken Francis, author with Theodore Dalrymple of The Terror of Existence: From Ecclesiastes to Theatre of the Absurd, read our piece on Darwinian philosopher Michael Ruse explaining why he is not a new atheist. He thought other readers might be interested to know of something Dr. Ruse has said in the past: Morality is a biological adaptation no less than are hands and feet and teeth. Considered as a rationally justifiable set of claims about an objective something, ethics is illusory. I appreciate that when somebody says ‘love thy neighbor as thyself,’ they think they are referring above and beyond themselves. Nevertheless, such reference is truly without foundation. Morality is Read More ›

Wouldn’t you know, jumping “junk DNA” can be lethal too

Researchers Nigel Goldenfeld and Thomas Kuhlman noticed that “half of the human genome is made up of retrotransposons [jumping genes, “junk DNA”], but bacteria hardly have them at all” and wondered what would happen if they just inserted some: “We thought a really simple thing to try was to just take one (retrotransposon) out of my genome and put it into the bacteria just to see what would happen,” Kuhlman said. “And it turned out to be really quite interesting.” Their results, published in the Proceedings of the National Academy of Sciences, give more depth to the history of how advanced life may have emerged billions of years ago—and could also help determine the possibility and nature of life on Read More ›

Complex stone tools from 160,000 to 170,000 years ago found in China

The Levallois method of making stone tools was used in India 172,000 years ago: Rather than chipping flakes off a stone to create a tool, Levallois techniques work on the stone so it is the flakes themselves that become the tools. This enables several tools to be made from a single stone. Until recently, it seemed that the Levallois revolution didn’t spread east to places like China until much later – about 40,000 years ago – but that idea is now being questioned. Bo Li at the University of Wollongong, Australia, and his colleagues have just confirmed that Levallois-style stone tools recovered from Guanyindong cave in south China are between 160,000 and 170,000 years old. Colin Barras, “Complex stone tools in Read More ›

Bird, tested and released, turned out to be a hybrid of three species

From ScienceDaily: Scientists have shown that a bird found in Pennsylvania is the offspring of a hybrid warbler mother and a warbler father from an entirely different genus — a combination never recorded before now and which resulted in a three-species hybrid bird. This finding has just been published in the journal Biology Letters. “It’s extremely rare,” explains lead author and Cornell Lab of Ornithology postdoctoral associate David Toews. “The female is a Golden-winged/Blue-winged Warbler hybrid — also called a Brewster’s Warbler. She then mated with a Chestnut-sided Warbler and successfully reproduced.” Well, if all we’ve heard about “species” and “speciation” is true, it shouldn’t just be extremely rare; it should be impossible. Hybridization is common among Golden-winged and Blue-winged Read More ›

Researcher: Human impact is a “reshaping of the tree of life”

Sarah Otto, a University of British Columbia researcher, tells media  about her research, Her paper is replete with examples from bird species slowly forgetting to migrate to mosquito breeds adapted specifically to underground subway tunnels. Backyard bird feeders are behind changes in the beak shape and strength of house finches. Different mammals are becoming nocturnal as a way to avoid human conflict. Introduced species change the ground rules for native plants and animals. It’s a mistake to think evolution requires millennia, said Otto. “Evolution happens really fast if the selection regimes are strong. We can see sometimes in plant populations evolutionary change in the course of years.”Bob Weber, “Humans are having huge influence on evolution of species, study says” at CBC Read More ›

Why Darwinian philosopher Michael Ruse is not a new atheist

This one missed the religion news stream yesterday; just saw it today: Partly it is aesthetic. They are so vulgar. Dawkins in The God Delusion would fail any introductory philosophy or religion course. To take one example, the Ontological Argument for God was first devised by Anselm and refurbished by Descartes. Roughly, it runs thus: God is by definition that than which none greater can be thought. Does He exist? Suppose He doesn’t. Then there is a greater who does exist. Contradiction! Hence, God exists. In The God Delusion, Richard Dawkins dismisses this longstanding and much debated philosophical argument with a few sneering paragraphs. His critique is on a par with someone arguing against Dawkins’ own body of work by saying Read More ›

Yes, the placebo effect is real, and it may be getting stronger

At Mind Matters: The fact that you may start to get better if you believe you are receiving treatment is one of the best-attested facts in medicine.  A drug licensed for use must demonstrate greater effectiveness than a placebo (a capsule of sugar or an inert substance, perhaps) in clinical trials. That standard does not mean, as is sometimes supposed, “greater effectiveness than nothing.” Many conditions for which we seek treatment respond—at least for a time—to the simple belief that we are receiving treatment. The placebo effect, as that fact is called, is one of the best-attested effects in medicine. But the fact that the mind acts on the body troubles materialists. Such facts, they say, require revision. Good luck Read More ›

Convergent evolution: Psychology Association says killer whales share personality traits with humans, chimps

Using a five-factor test. Convergent evolution is cited: Researchers found that the personality traits of killer whales were similar to those of both humans and chimpanzees but more similar to chimpanzees. Killer whales were similar to chimpanzees and humans for the extraversion factor (e.g., playful, gregarious and sociable). Killer whales and chimpanzees also shared a combination of personality traits for conscientiousness (e.g., constant, stubborn and protective) and agreeableness (e.g., patient, peaceable and not bullying), along with some personality traits relating to dominance. The findings may suggest some evolutionary convergence where the personality traits of killer whales and primates are similar because of the advanced cognitive abilities required for complex social interactions. “Killer Whales Share Personality Traits with Humans, Chimpanzees” at Read More ›

Whatta headline! Early man was “total mean girl”

William von Hippel, an evolutionary psychologist promoting a book, explains how we got here: Social connection and its middle-school messiness assured our survival — more than harnessing fire or developing opposable thumbs. Von Hippel writes that a series of “social leaps” — or movements forward in the way we connect with our fellow man — made our brains bigger, our connections stronger and our long-term survival certain. We learn about the importance of bitchiness and gossip. Our ability to lie and deceive also evolved. Though many members of the animal kingdom use deception, outright lying requires Theory of Mind, as one needs to comprehend what someone is thinking in order to manipulate them. Evolutionary scientists say this is a distinctly Read More ›

Is human evolution happening faster than ever?

Killer quote: “Realising evolution doesn’t only happen by natural selection makes it clear the process isn’t likely to ever stop.” So says an evolutionary geneticist: We measure the speed of gene evolution by comparing human DNA with that of other species, which also allows us to determine which genes are fast-evolving in humans alone. One fast-evolving gene is human accelerated region 1 (HAR1), which is needed during brain development. A random section of human DNA is on average more than 98% identical to the chimp comparator, but HAR1 is so fast evolving that it’s only around 85% similar. Though scientists can see these changes are happening – and how quickly – we still don’t fully understand why fast evolution happens Read More ›

Does time exist and do we experience it?

That’s a perhaps surprisingly contentious topic among theoretical physicists: You see, whether time flows forward, or doesn’t flow at all, or moves back and forth, our resulting subjective experience would be identical in all cases: we would always find ourselves in an experiential snapshot extending smoothly backwards in memory and forwards in expectation, just like the desert road. We would always tell ourselves the same story about what’s going on. A mere cognitive narrative—based purely on contents of the experiential snapshot in question—would suffice to convince us of the forward flow of time even when such is not the case. The ostensible experience of temporal flow is thus an illusion.Bernardo Kastrup, “Do we actually experience the flow of time?” at Read More ›