Category Archives: Science

Nature Reviews: Top New Science Books – May 2023

nature Magazine Science Book Reviews – May 15, 2023: Prejudice in technology, and the necessity of time. Andrew Robinson reviews five of the best science picks.

More Than a Glitch

Meredith Broussard – MIT Press (2023)

An artificial-intelligence (AI) ‘glitch’ is a problem neither expected nor consequential. Bias, by contrast, is baked in and disastrous, argues data scientist Meredith Broussard, one of very few Black women in this field, who focuses on AI and journalism. “Tech is racist and sexist and ableist because the world is so,” she says. Vivid examples in her disturbing book include that of a man arrested by US police using facial-recognition technology — purely because both he and the suspect in a blurry surveillance photo were Black.

Assyria

Eckart Frahm – Basic (2023)

The world’s first empire flourished in Assyria in the eighth and seventh centuries bc, and has long been seen as the epitome of barbarism. But, as Assyriologist Eckart Frahm reveals in his deeply informed, challenging history, Assyria produced many features of the modern world. Its innovations included long-distance trade, sophisticated communications networks, mass deportations and widespread political surveillance. Unlike most later empires, he writes, it was at least honest in its “open celebration of plunder, torture, and murder”.

Hands of Time

Rebecca Struthers –  Hodder & Stoughton (2023)

‘Time’ is “the most commonly used noun” in English, according to Rebecca Struthers, the first professional watchmaker in the United Kingdom to earn a PhD in horology. Each chapter of her exquisitely crafted history explores a pivotal moment in watchmaking from the past 500 years. Mechanical timekeepers, she argues, have influenced human culture as much as the printing press. Imagine trying to catch a train by depending on the Sun’s position, or to perform an organ transplant without measuring the patient’s heart rate precisely.

The Deep Ocean

Michael Vecchione et al. Princeton Univ. Press (2023)

“For most people, the deep ocean is out of sight and out of mind,” write three zoologists and an oceanographer. The zone starts where penetration of sunlight can no longer support photosynthesis, about 200 metres down. This guidebook dissipates ignorance with superb colour photographs of astonishing organisms, accompanied by detailed captions and brief essays. For example, the vampire squid (Vampyroteuthis infernalis) is neither vampire nor squid, but was so named because its black ‘cloak’ reminded scientists of Dracula.

Tenacious Beasts

Christopher J. Preston –  MIT Press (2023)

Humans and domestic animals make up 96% of the mass of the world’s mammals. The outlook for wildlife “remains dire”, writes philosopher Christopher Preston. But he describes signs of hope in his well-travelled, thoughtful study of recoveries. Populations of humpback whales in the western Indian Ocean have surged since the mid-twentieth century; those of Californian black bears have quadrupled in a few decades. He visits farmland, prairie, river, forest and ocean, exploring why only certain species are recovering.

Research Preview: Science Magazine – May 12, 2023

Science | AAAS

Science Magazine – May 12, 2023 issue: Scalloped hammerhead sharks (Sphyrna lewini) form daytime schools near the ocean’s surface and, at night, dive into cold, deep waters to hunt deep-sea prey. They keep warm while deep diving by closing their gills—effectively holding their breath.

‘It’s still killing and it’s still changing.’ Ending COVID-19 states of emergency sparks debate

Tedros Adhanom Ghebreyesus speaks at International Health Regulations Emergency Committee for COVID-19 meeting

Moves by WHO and U.S. usher pandemic into new phase of disease monitoring, even as coronavirus kills thousands weekly

Research Preview: Nature Magazine – May 11, 2023

Volume 617 Issue 7960

nature Magazine – May 11, 2023 issue: The human reference genome has been the backbone of human genomics since the release of the draft sequence in 2001. But it has its limitations: one genome cannot hope to capture the diversity of the human species. In this week’s issue, the Human Pangenome Reference Consortium presents the first draft human pangenome, which combines genetic material from 47 genetically diverse individuals to provide a more complete picture of the human genome.

They’re a couple: JWST is first to spot pair of mysterious ‘Y dwarfs’

A dark brown sphere with lighter bands seen against a starry sky.

Two extremely cool examples of ‘failed stars’ called brown dwarfs are found orbiting each other.

Hurricanes: The Science Behind Their Destruction

The Economist (May 5, 2023) – Hurricanes are among the most dangerous natural phenomena on earth, causing billions of dollars of damage and destroying lives every year. But what turns a peaceful patch of ocean into the planet’s most destructive force, and how is this process being affected by climate change?

Video timeline: 00:00 – What are tropical cyclones? 00:46 – The history of tropical cyclones 02:06 – How do they form? 04:33 – What happens when they reach land? 07:13 – What is the impact of climate change?

Research Preview: Science Magazine – May 5, 2023

Current Issue Cover

Science Magazine – May 5, 2023 issue: The immune system protects us from cancer and infection using a powerful armamentarium that is kept in check by an array of regulatory processes. When they fail, the immune system can start attacking the host in a process known as autoimmunity. This special issue highlights recent advances in our understanding of autoimmune diseases and the regulation of immune tolerance. See the special section beginning on page 468.

When a delicate balancing act goes wrong

Antibodies that target self-antigens are an important component of certain autoimmune diseases and are sometimes used as a clinical marker for these syndromes. ILLUSTRATION: STEPHAN SCHMITZ/FOLIOART

A cardinal feature of the immune system is its ability to distinguish self from nonself. Although many early immunologists thought that its powerful defenses could rarely, if ever, be turned against the host, pioneering research on autoimmune diseases beginning in the early 1900s has documented a different reality. More than 80 different autoimmune disorders have now been described that may affect up to 5% of the population.

Russia tensions keep Arctic research on ice

Collaboration stifled as many scientists look to establish fieldwork elsewhere

Twist of fate

A physician-scientist has probed Parkinson’s disease for more than 30 years. Now, he has it

Art History Book Profiles: ‘The Story of Art Without Men’ Author Katy Hessel

PBS NewsHour (May 3, 2023) -How many women artists can you name? That was a question Katy Hessel, then a 21-year-old art history major, asked herself. The results were disappointing. And so she set about learning and teaching herself and then others.

Art historian, author and presenter Katy Hessel poses for photos at the Falmouth Book Festival on October 19, 2022 in Falmouth, England. Her new book "The Story of Art Without Men" showcases the lives and work of women artists from the 16th century to the present. (Photo of Hessel by Hugh R Hastings/Getty Images; book cover courtesy of W.W. Norton & Company)
Art historian, author and presenter Katy Hessel 

That resulted in her new book, “The Story of Art Without Men.” Jeffrey Brown discussed the book with Hessel for our arts and culture series, CANVAS.

Research Preview: Nature Magazine – May 4, 2023

Volume 617 Issue 7959

nature Magazine – May 4, 2023 issue: As stars evolve, they expand and so will engulf planets in close orbit around them. This planetary catastrophe is expected to generate powerful luminous ejections of mass from the star, although this has not been observed directly.

Is the world ready for ChatGPT therapists?

The current landscape of mobile mental-health apps is the result of a 70-year search to automate therapy. Now, advanced AIs pose fresh ethical questions.

Cartoon of a mobile phone as a psychotherapist surrounded by several other mobile-phone patients
Illustration by Fabio Buonocore

Since 2015, Koko, a mobile mental-health app, has tried to provide crowdsourced support for people in need. Text the app to say that you’re feeling guilty about a work issue, and an empathetic response will come through in a few minutes — clumsy perhaps, but unmistakably human — to suggest some positive coping strategies.

Fish on dry land hint at why we blink

Close up of an Indian mudskipper (Periophthalmodon septemradiatus) blinking on land.
Mudskippers blink by retracting their eyes into the heads, helping them to moisten their corneas. Credit: Brett R. Aiello

Insights from mudskippers suggest that blinking is an adaptation to emerging from the sea.

Middle East Ecosystems: Can The Dead Sea Be Saved?

DW Documentary (May 1, 2023) – The Dead Sea, shared by Israelis, Jordanians and Palestinians, is drying up. The salt lake, famous for its exceptional geographical location and its healing properties, is the deepest of its kind on earth.

The drying up of the Dead Sea is causing widespread damage, from huge sinkholes to abandoned beaches and collapsed roads. This is not an act of nature. It is the result of overconsumption and poor water management. If something is not done soon, very little of the Dead Sea will remain. In a region marked by ongoing conflict, natural resources are being depleted. To save the Dead Sea, surrounding countries must work together.

Three individuals — a Jordanian, an Israeli and a Palestinian — feel they can’t just sit idly by. They decide to draw the world’s attention to the problem with a heroic act. In an unprecedented and extremely dangerous undertaking, the three decide to swim across the Dead Sea, from Jordan to Israel, to highlight the plight of the dying waters.

Documentaries: What Causes ‘Monster Waves’?

DW Documentary (April 30, 2023) – Statistically, a large ship is lost in the world’s oceans almost once every seven days. One reason for this: monster waves that appear to come from nowhere. Unlike tsunamis, they are completely unpredictable. That means there’s no way to issue any kind of warning.

Scientists still know astonishingly little about these freak waves. For centuries, many people dismissed them as the stuff of legend. The first scientific proof of their existence didn’t come until 1995. A laser on the Draupner oil rig in the North Sea measured a wave almost 26 meters high. Wave models in use at the time deemed this to be an impossibility.

But the data, captured by chance, changed the course of research forever. Scientists have focused on three theories in their bid to explain the emergence of freak waves. The first is the current model: currents flowing in opposite directions reduce the length of the waves, pushing them together to create a monster surge. But freak waves are also a phenomenon in regions where currents aren’t particularly strong.

That’s why researchers came up with a second theory: superposition. In this linear process, faster, longer waves catch up with short, slower waves. They overlap and form monster waves. But in some places, freak waves occur with a frequency that can’t be explained by this linear theory, either.

For several years now, scientists have been considering a third possibility: when non-linear wave trains are unstable, they can develop into monster waves through a highly complex energy “theft”. Research is divided over whether it’s the linear or non-linear effects that form freak waves out at sea – a question that’s crucial for shipping!

Research Preview: Science Magazine – April 28, 2023

Image

Science Magazine – April 28, 2023 issue: Mammals come in a wide variety of shapes and sizes, here represented by some of the least well known and most unusual—clockwise from top left: a fossa, a Hoffmann’s two-toed sloth, a lesser hedgehog tenrec, two tree (or white-bellied) pangolins, and an aye-aye. 

Zoonomia

Mammals are one of the most diverse classes of animals, ranging both in size, across many orders of magnitude, and in shape—nearly to the limit of one’s imagination. Understanding when, how, and under what selective pressures this variation has developed has been of interest since the dawn of science.

The 240 mammals sequenced through the Zoonomia project include the famous sled dog Balto, who was reported to have led a team of sled dogs in the final leg of the race to carry a life-saving serum to Nome, Alaska, in 1925. His genome, in conjunction with others, was used to reveal his ancestry and adaptations, as well as predict aspects of his morphology, including his coat color.

A two-stage earthquake in the Aleutians

Researchers deploy a wave glider to measure seafloor displacement associated with earthquakes.PHOTO: TODD ERICKSEN

The destructive behavior of great earthquakes in subduction zones, such as in Japan in 2011, depends on details of the earthquake slip. A slip at shallow depth is the dominant driver of tsunami. Using recently developed seafloor geodetic instrumentation, Brooks et al. found that the deeper slip of the July 2021 magnitude 8.2 Chignik, Alaska earthquake was followed 2.5 months later by a second stage of (aseismic) slip. This approximately 2 to 3 meters of “silent” slip allowed the shallow fault to catch up with its deeper portion, reducing its future earthquake potential.