Studies of the microbes living on and in our bodies are conducted mainly in a few rich countries, squandering opportunities to improve the health of people globally.
In December 2022, after more than a decade of effort and frustration, scientists at the US National Ignition Facility (NIF) announced that they had set a world record by producing a fusion reaction that released more energy than it consumed — a phenomenon known as ignition. They have now proved that the feat was no accident by replicating it again and again, and the administration of US President Joe Biden is looking to build on this success by establishing a trio of US research centres to help advance the science.
nature podcasts (December 29, 2023) – A new kind of solar cell is coming: is it the future of green energy? Firms commercializing perovskite–silicon ‘tandem’ photovoltaics say that the panels will be more efficient and could lead to cheaper electricity.
On the outskirts of Brandenburg an der Havel, Germany, nestled among car dealerships and hardware shops, sits a two-storey factory stuffed with solar-power secrets. It’s here where UK firm Oxford PV is producing commercial solar cells using perovskites: cheap, abundant photovoltaic (PV) materials that some have hailed as the future of green energy. Surrounded by unkempt grass and a weed-strewn car park, the factory is a modest cradle for such a potentially transformative technology, but the firm’s chief technology officer Chris Case is clearly in love with the place. “This is the culmination of my dreams,” he says.
Juliette Powell & Art Kleiner Berrett-Koehler (2023)
The benefits and harms of social media are intimately tied to the ongoing debate about artificial intelligence (AI). Will AI systems trained partly on social media benefit or harm humanity? In their excellent, sometimes alarming, analysis of engineering, social justice, commerce and government, entrepreneur and technologist Juliette Powell and writer and educator Art Kleiner compare humans developing AI tools to first-time parents. They recommend guiding AI systems “as we would a child towards full adulthood”.
Consciousness
John Parrington Icon (2023)
“The material basis of human consciousness is one of the biggest unsolved issues in science,” admits cellular and molecular pharmacologist John Parrington in his pithy addition to a vast literature dating from the time of ancient Greek philosopher Aristotle. He considers many theories and proposes his own. Humans, he argues, are distinguished by conceptual thought and language, along with skills in designing tools and technologies. The evolution of these powers transformed our brains, creating meaning and consciousness.
Democracy in a Hotter Time
Ed. David W. Orr MIT Press (2023)
Environmentalist David Orr writes in the introduction to this timely collection that the planet faces two interlinked crises: “rapid climate change and potentially lethal threats to democracy”. The US Constitution rigorously protects private property but does not mention ecological systems, he observes. Contributors — almost all US-based — from a wide range of fields examine the need for political reform. The book is in four parts: the nature of democracy; roadblocks to change; policy and law; and education, including academic culture.
Extinctions
Michael J. Benton Thames & Hudson (2023)
When palaeontologist Michael Benton learnt about dinosaurs as a boy, he “loved the fact they were extinct”. They were like real science fiction. Perhaps he also intuited that their extinction permitted his existence. As his deeply informed and readable book reveals, the mass extinction at the end of the Cretaceous period 66 million years ago allowed a new cohort of creatures — including mammals — to “inherit the Earth”, as did four earlier extinction events. Living species represent less than 1% of all the species that have existed.
A Guess at the Riddle
David Z. Albert Harvard Univ. Press (2023)
The physical interpretation of quantum mechanics has been a controversial riddle since the 1920s, when Niels Bohr argued that the atom’s inner workings could not be described in physical terms. Today, many philosophers and physicists disagree, but there’s no consensus on an alternative. Philosopher David Albert’s provocative book argues, in three essays, that Bohr’s quantum-measurement problem starts to make sense if the wave function is understood as the fundamental physical ‘stuff’ of the Universe.
Nature Magazine – December 13, 2023:The latest issue cover features the BRAIN Initiative Cell Census Network (BICCN), which presented nine papers that map the entire mouse brain in unprecedented detail.
The extravagantly feathered Seychelles paradise flycatcher lacks genetic diversity, which might hamper its resilience to climate change and other threats.
Nature Magazine – December 6, 2023:The latest issue cover features Internal Clocks – Blood proteins reveal age of human organs to help track health and disease…
The massive buried structures at Gunung Padang in Indonesia would be much older than Egypt’s great pyramids — if they’re even human constructions at all.
Ancient humans painted scenes in Indonesian caves more than 45,000 years ago, but their art is disappearing rapidly. Researchers are trying to discover what’s causing the damage and how to stop it — before the murals are gone forever.
Nature Magazine – November 29, 2023:The latest issue cover features trails left by satellites, including BlueWalker 3, a prototype communications satellite, as they pass across the sky.
Nature Magazine – November 23, 2023: The latest issue cover features how cryo-electron microscopy can reveal the structure of motor protein myosin filaments, which power the heart via muscle contraction.
Nature Magazine – November 16, 2023: The latest issue cover features how echinoderms such as starfish and sea urchins have evolved five-fold symmetry, with five limbs radiating from a central mouth.
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