Category Archives: Science

Documentary: ‘Your Brain – Perception Deception’

NOVA PBS Official (May 17, 2023) – Neuroscientists discover the tricks and shortcuts the brain takes to help us survive. Is what you see real?

Chapters: 00:00 Introduction 03:59 The Science of Optical Illusions and Blind Spots 13:48 Is the Dress Blue and Black or White and Gold? 21:06 Yanny or Laurel? Auditory Illusions 24:46 Is Pain an Illusion? 30:28 What is Consciousness? Blind Spots and Babies 41:35 How is Consciousness Measured? 45:32 How the Brain Affects Memories 50:14 Conclusion

Join neuroscientist Heather Berlin on a quest to understand how your brain shapes your reality, and why you can’t always trust what you perceive. In the first hour of this two-part series, learn what the latest research shows about how your brain processes and shapes the world around you, and discover the surprising tricks and shortcuts your brain takes to help you survive.

Official Website: https://to.pbs.org/3Ic9dRS | #novapbs

Research Preview: Nature Magazine – May 18, 2023

Volume 617 Issue 7961

nature Magazine – May 18, 2023 issue: The cover shows an artist’s impression of two male mammoths fighting. During episodes of musth, adult male elephants undergo periods of elevated testosterone levels associated with aggression and competition for mating. In this week’s issue, Michael Cherney and his colleagues show that male woolly mammoths (Mammuthus primigenius) experienced similar episodes of musth. 

The ocean is hotter than ever: what happens next?

Record temperature combined with an anticipated El Niño could devastate marine life and increase the chances of extreme weather.

Split level of shallow bleaching corals and island, New Ireland, Papua New Guinea, June 2010

The global ocean hit a new record temperature of 21.1 ºC in early April, 0.1 ºC higher than the last record in March 2016. Although striking, the figure (see ‘How the ocean is warming’) is in line with the ocean warming anticipated from climate change. What is remarkable is its occurrence ahead of — rather than during — the El Niño climate event that is expected to bring warmer, wetter weather to the eastern Pacific region later this year.

For chemists, the AI revolution has yet to happen

Machine-learning systems in chemistry need accurate and accessible training data. Until they get it, they won’t achieve their potential.

Cancer protein. Computer model of the enzyme protein tyrosine kinase, which is involved in cancer cell formation.

Many people are expressing fears that artificial intelligence (AI) has gone too far — or risks doing so. Take Geoffrey Hinton, a prominent figure in AI, who recently resigned from his position at Google, citing the desire to speak out about the technology’s potential risks to society and human well-being.

Science Review: Scientific American – June 2023 Issue

Scientific American Magazine Vol 328 Issue 6

Scientific American – June 2023 Issue:

What Is the Future of Fusion Energy?

Nuclear fusion won’t arrive in time to fix climate change, but it could be essential for our future energy needs

What Is the Future of Fusion Energy?

Last December physicists working on fusion claimed a breakthrough. A team at the National Ignition Facility (NIF) in California announced it had extracted more energy from a controlled nuclear fusion reaction than had been used to trigger it. It was a global first and a significant step for physics—but very far from enabling practical exploitation of fusion as an energy source.

Physicists Make Matter out of Light to Find Quantum Singularities

Physicists Make Matter out of Light to Find Quantum Singularities

Experiments that imitate solid materials with light waves reveal the quantum basis of exotic physical effects

By Charles D. Brown II

A Traumatized Woman with Multiple Personalities Gets Better as Her ‘Parts’ Work as a Team

A Traumatized Woman with Multiple Personalities Gets Better as Her 'Parts' Work as a Team

Therapy for dissociative identity disorder has aimed to meld many personalities into one. But that’s not the only solution, a caring therapist shows

By Rebecca J. Lester

Inside Tour: Gilder Center At The American Museum Of Natural History In NYC

PBS NewsHour (May 15, 2023) -At a time when the public teaching of science is again being fought over, the largest museum of natural history in the U.S. just extended its reach. Jeffrey Brown got a look inside the American Museum of Natural History’s stunning new expansion in New York for our arts and culture series, CANVAS.

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.