Category Archives: Science

Nature Reviews: Top New Science Books – June 2023

nature Magazine Science Book Reviews – June 23, 2023: The ocean’s engine, the science of reading, the mystery of moths… Andrew Robinson reviews five of the best science picks.

Blue Machine

By Helen Czerski (2023)

Few scientific subjects are so vast, and yet oceans “often seem invisible”, remarks physicist and broadcaster Helen Czerski; the workings of the seas got no mention in her physics training. Her profound, sparkling global ocean voyage mingles history and culture, natural history, geography, animals and people, to understand the “blue machine”: the ocean engine powered by sunlight that shunts energy from Equator to poles.

The Science of Reading

By Adrian Johns (2023)

Starting in the 1880s with US psychologist James Cattell, the experimental study of reading dealt in extremes, notes information historian Adrian Johns in his intriguing analysis. Researchers devised mechanical ways to measure quantities that were nearly imperceptible, such as pauses in motion as an eye scans prose. Today, scanners can measure brain activity, but the reading process remains mostly imponderable.

Meetings with Moths

By Katty Baird  (2023)

Ecologist Katty Baird’s fly-specialist friend grumbles that butterflies should be renamed ‘butter-moths’. Butterflies and moths belong to one order, and are not always easy to tell apart. However, most butterflies rest with wings shut, whereas resting moths display theirs. The garden tiger moth (Arctia caja), for example, has “forewings a mosaic of darkest brown and white which conceal shocking scarlet underwings spotted with denim blue”.

A History of Ancient Egypt, Volume 3

By John Romer (2023)

This deeply informed history by Egyptologist John Romer focuses on the New Kingdom, 1550–1185 bc, including rulers Nefertiti, Tutankhamun and Ramesses II: crucial figures in popular perception. Calling it the “most fantasized period in all of ancient history”, Romer criticizes much scholarship on the era for being “firmly stuck” in the nineteenth-century European vision of ancient Egypt, launched by Jean-François Champollion in the 1820s.

In the Herbarium

By Maura C. Flannery (2023)

London’s Royal Botanic Gardens at Kew are open to all. Not so Kew’s Herbarium, a collection of more than seven million plant specimens reserved for academic visitors. Access to most herbaria is restricted: biologist Maura Flannery knew “almost nothing” about them until 2010, when a US curator took her behind the scenes at one and she fell in love with them.

Research Preview: Science Magazine – June 23, 2023

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Science Magazine – June 23, 2023 issue:

Human stem cells turned into detailed lab replicas of embryos

Mock embryos created by multiple groups recapitulate developmental events beyond implantation

Into the dark

A European space telescope sets off to discover the nature of dark energy—the biggest ingredient in the universe

Could chatbots help devise the next pandemic virus?

An MIT class exercise suggests AI tools can be used to order a bioweapon, but some are skeptical

Research Preview: Nature Magazine – June 22, 2023

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nature Magazine -June 22, 2023 issue: 00:45 Why losing the Y chromosome makes bladder cancer more aggressive; How pollution particles ferry influenza virus deep into the lungs, and why artificial lights could dazzle glow worms into extinction.

Laos cave fossils prompt rethink of
human migration map

A skull fragment and shin bone suggest that early modern humans might have passed through southeast Asia earlier than thought.

Tam Pà Ling cave.

Researchers laboriously sifted through clay, bucket by bucket, using their fingers to hunt for bone fragments

Research Preview: Science Magazine – June 16, 2023

Science Magazine – June 16, 2023 issue: A wild little penguin (Eudyptula minor) stands silhouetted against the city of Melbourne, Australia. Increasing levels of light pollution are having adverse effects on humans and the natural world.

Losing the darkness

For most of history, the only lights made by humans were naked flames. Daily life was governed by the times of sunrise and sunset, outdoor nighttime activities depended on the phase of the Moon, and viewing the stars was a common and culturally important activity. Today, the widespread deployment of outdoor electric lighting means that the night is no longer dark for most people—few can see the Milky Way from their homes. Outdoor lighting has many legitimate uses that have benefited society. However, it often leads to illumination at times and locations that are unnecessary, excessive, intrusive, or harmful: light pollution.

Potential for recovery of declining reef sharks

Data on shark populations in coral reefs raise concern and hope for recovery

Sharks and their relatives are some of the most threatened vertebrates on Earth, with approximately one-third estimated or assessed as threatened with extinction (1). This is a major problem because as predators that help keep the food web in balance, these animals play a variety of vitally important ecological roles (2) and in doing so help to keep healthy many ecosystems that humans depend on. Coral reefs provide homes for countless fish species that are vital for fisheries and are therefore an especially important ecosystem for humans—and one where the decline of shark populations seems to be especially acute

Research Preview: Nature Magazine – June 15, 2023

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nature Magazine – June 15, 2023 issue: In this week’s issue, Abhinav Kandala and his colleagues show that it is still possible for a quantum computer to outperform a classical computer, by mitigating, rather  than correcting, the errors. 

DeepMind AI creates algorithms that sort data faster than those built by people

A replica of a game between 'Go' player Lee Se-Dol and a Google-developed super-computer, in Seoul, Korea, 2016.

The technology developed by DeepMind that plays Go and chess can also help to write code.

An artificial intelligence (AI) system based on Google DeepMind’s AlphaZero AI created algorithms that, when translated into the standard programming language C++, can sort data up to three times as fast as human-generated versions.

“We were a bit shocked,” said Daniel Mankowitz, a computer scientist at DeepMind who led the work. “We didn’t believe it at first.”

Ukraine dam collapse: what scientists are watching

Maxar satellite imagery of the destruction of the Nova Kakhovka dam and hydroelectric power facility.
Large sections of the Kakhovka dam have collapsed, unleashing catastrophic floods. Credit: Satellite image (c) 2023 Maxar Technologies via Getty

Extensive flooding could have severe consequences for farming, health and the environment.

The 66-year-old Kakhovka dam on the Dnieper River in south Ukraine collapsed on the morning of 6 June after a suspected explosion, triggering a catastrophic humanitarian and environmental crisis.

Science Review: Scientific American – July 2023 Issue

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Scientific American – July 2023 Issue: Smart, adaptable and loud, parrots are thriving in cities far outside their native ranges.

Parrots Are Taking Over the World

Parrots Are Taking Over the World

By Ryan F. Mandelbaum

At Brooklyn’s Green-Wood Cemetery the living get as much attention as the dead. Groundskeepers maintain the 478-acre historic landmark as an arboretum and habitat for more than 200 breeding and migratory bird species. But many visiting wildlife lovers aren’t interested in those native birds. They’re at the entryway, their binoculars trained on the spire atop its Gothic Revival arches. They’ve come to see the parrots.

Extreme Heat Is Deadlier Than Hurricanes, Floods and Tornadoes Combined

Extreme Heat Is Deadlier Than Hurricanes, Floods and Tornadoes Combined

When dangerous heat waves hit cities, better risk communication could save lives

By Terri Adams-Fuller

Exposure to extreme heat can damage the central nervous system, the brain and other vital organs, and the effects can set in with terrifying speed, resulting in heat exhaustion, heat cramps or heatstroke. It also exacerbates existing medical conditions such as hypertension and heart disease and is especially perilous for people who suffer from chronic diseases. The older population is at high risk, and children, who may not be able to regulate their body temperatures as effectively as adults in extreme conditions, are also vulnerable.

Brain Waves Synchronize when People Interact

Brain Waves Synchronize when People Interact

The minds of social species are strikingly resonant

By Lydia Denworth

Book Reviews: ‘What An Owl Knows’ By Jennifer Ackerman (June 2023)

With their unnerving stare and eerie ways, it is small wonder that owls provoke superstition—and flights of fancy, as in the owl who sails with the pussycat in Edward Lear’s poem. In myths, stories and art, “owls speak of wisdom and luck, of misfortune and malevolence”, the author writes. They were associated with Athena, Greek goddess of wisdom.

The Economist (June 11, 2023) – With a face as round as the first letter of its name and a stance as upright as the last—along with human-like features and a haunting cry—the owl has a mystical, mythical perch in the imagination. Difficult to spot because of their mostly nocturnal habits, and sporting cryptic plumage that helps them melt into landscapes, owls, writes Jennifer Ackerman, are the most enigmatic of birds.

Ms Ackerman is a natural-history writer who specialises in the avian world. In What an Owl Knows” she offers an absorbing ear-tuft-to-tail appreciation of the raptor that Mary Oliver, a poet, called a “god of plunge and blood”. Owls, it seems, know a lot. Ms Ackerman draws on recent research to explain what and how.

To begin with, she stresses, there is no generic owl, but rather a diversity of some 260 species found on every continent bar Antarctica. They stretch from the fire-hydrant-sized Blakiston’s Fish Owl to the Elf Owl, which could fit in your palm. Most, but not all, are nocturnal. 

Read more

Jennifer Ackerman has been writing about science and nature for almost three decades. Her most recent book, What an Owl Knows: The New Science of the World’s Most Enigmatic Birds, explores recent findings on the biology, behavior, and conservation of owls. Her previous book, The Bird Way: A New Look at How Birds Talk, Work, Play, Parent, and Think, was a finalist for the PEN/E. O. Wilson Literary Science Writing Award. Her New York Times bestselling book, The Genius of Birds, has been translated into twenty-five languages and was named one of the best nonfiction books of 2016 by The Wall Street Journal, a Best Science Book by NPR’s Science Friday, and a Nature Book of the Year by The Sunday Times

Research Preview: Science Magazine – June 9, 2023

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Science Magazine – June 9, 2023 issue: In response Covid-19 lockdowns that severely altered human mobility, with many people confined to their homes, animals such as the coyote (Canis latrans) traveled longer distances and occurred closer to roads. These changes suggest that animals can modify their behavior in response to rapid changes in human mobility.

Was a small-brained human relative the world’s first gravedigger—and artist?

Anthropologists praise Homo naledi fossils but doubt spectacular claims of intentional burial and art

A reconstruction of Homo naledi’s head

A trio of papers posted online and presented at a meeting today lays out an astonishing scenario. Roughly 240,000 years ago, they suggest, small-brained human relatives carried their dead through a labyrinth of tight passageways into the dark depths of a vast limestone cave system in South Africa. Working by firelight, these diminutive cave explorers dug shallow graves, sometimes arranging bodies in fetal positions and placing a stone tool near a child’s hand. Some etched cave walls with crosshatches and others cooked small animals in what amounted to a subterranean funeral, more than 100,000 years before such behaviors emerged in modern humans.

LET THERE BE DARK

Small lettuce sprouts growing on acetate

Crops grown without sunlight could help feed astronauts bound for Mars, and someday supplement dinner plates on Earth

For the first astronauts to visit Mars, what to eat on their 3-year mission will be one of the most critical questions. It’s not just a matter of taste. According to one recent estimate, a crew of six would require an estimated 10,000 kilograms of food for the trip. NASA—which plans to send people to Mars within 2 decades—could stuff a spacecraft with prepackaged meals and launch additional supplies to the Red Planet in advance for the voyage home. But even that wouldn’t completely solve the problem.

Research Preview: Nature Magazine – June 8, 2023

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nature Magazine – June 8, 2023 issue:  Coral reef fishes, such as the blenny Ecsenius stictus pictured on the cover, are diverse, abundant and grow quickly. In this week’s issue, Alexandre Siqueira and his colleagues investigate the evolutionary history of these fishes to find out how growth has shaped life on coral reefs. 

Camera that could fit on a penny captures vivid colour photos

Optimized phase mask of five-millimetre diameter fabricated using a nanofabrication approach.

A ‘meta-lens’ and corrective algorithms allow a tiny device to produce high-resolution images.

A computational-imaging technique paves the way for ultra-small cameras that could be used in various portable devices.

These hardy ants build their own landmarks in the desert

Tunisian desert ant Cataglyphis fortis.

Ants living on the sprawling salt pans of Tunisia use DIY markers to find their way home.

The desert ant Cataglyphis fortis lives in Tunisia’s arid salt flats, and can travel more than a kilometre from its underground nest in search of food. Now scientists have found that these ants build tall hills on top of their nests that help the insects to find their way home across the vast, featureless landscape1.

Culture: The American Scholar – Summer 2023

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THE AMERICAN SCHOLAR SUMMER 2023 issue: What does Antoni van Leeuwenhoek have to do with Covid? Can a digital restoration of a supposed da Vinci be just as good as the real thing? What was it like to be a young journalist on one of François Truffaut’s sets?

A Kingdom of Little Animals

Antoni van Leeuwenhoek, in a circa 1680 painting by the Dutch artist Jan Verkolje, famous for his portraits of prominent members of Delft society (Wikimedia Commons)
Antoni van Leeuwenhoek, in a circa 1680 painting by the Dutch artist Jan Verkolje, famous for his portraits of prominent members of Delft society

Antoni van Leeuwenhoek’s discovery of microorganisms made possible the revolutionary advances in biology and medicine that continue to inform our Covid age

By Laura J. Snyder

One night in 1677, a grizzled man in a wrinkled linen nightshirt rushed from his bemused wife’s bed with a candle in hand to examine the “remains of conjugal coitus, immediately after ejaculation before six beats of the pulse.” Using the candle to cast a pool of light in his dark study, he put a drop of the liquid into a tiny glass vial he had blown himself, attaching it to the back of a strange-looking device he had also constructed. 

The Whole World in His Hands

The Salvator Mundi in its damaged state—cleaned but not yet restored (Wikimedia Commons)

What a digital restoration of the most expensive painting ever sold tells us about beauty, authenticity, and the fragility of existence

I got the call late on a summer afternoon. Yanai Segal, an artist I’ve known for years, asked me whether I’d heard of the Salvator Mundi—the painting attributed to Leonardo da Vinci that was lost for more than two centuries before resurfacing in New Orleans in 2005. I told him that I’d heard something of the story but that I didn’t remember the details. He had recently undertaken a project related to the painting, he said, and wanted to tell me about it. I was eager to hear more, but first I needed to remind myself of the basic facts. We agreed to speak again soon.