Science

Should we give weight loss jabs to children?

I have seen the future of food. And some of you won’t like it. On a research trip to the Netherlands last week, along with the fellow partners of my firm, Bramble, I took a speedboat tour of the port of Rotterdam. One of the most awesome sights was the so-called ‘Innocent Blender’ – a vast smoothie-making fortress, box-shaped and silver – glinting over the water. This is where the British-based, Coca-Cola-owned company makes its ‘tasty little drinks’. The factory location makes sense: most of Europe’s imported fruit comes via Rotterdam. Massive tankers – 600ft long and filled with 40,000 tons of chilled orange juice from Brazil – move through

How the US military became world experts on the environment

In 1941, as it entered the second world war, the US Army barely bested Bulgaria’s for size and combat readiness. Nor did US forces have very much idea of what conditions were like in their new theatres of operation. In the winter of 1942, hot-weather gear and lightweight machinery landed in the deserts of North Africa where hot and dry conditions were assumed to persist throughout the year. Men froze half to death, even as their digging equipment foundered in winter mud. Sand, Snow and Stardust is the story of how the US military shed its ignorance and, by harnessing logistical intelligence and environmental knowledge, turned America into a global

Why going nuclear is humanity’s only hope

There are three parties when it comes to global warming. First, the hard right, which says it isn’t happening, and even if it is that we can do nothing about it. Then there are the far leftish Luddites who would smash all power generation systems, allowing only wind turbines, wave power etc. Finally there are the suave centrists who know perfectly well that only nuclear can save us. This book will become their bible. Tim Gregory is a nuclear scientist who works at Sellafield. He has a serious problem defending his conviction that nuclear is the answer: radiophobia, the terror people feel about radioactivity. Superficially, this terror seems well-founded. There

The downfall of climate change poster boy Michael Mann

Even if you’ve never heard of Michael Mann, you will have felt his baleful influence on your energy bills. He is the inventor of the hockey stick chart, which shows a sharp increase in late 20th century global temperatures, like the blade of an ice hockey stick. It put rocket boosters on the climate change scare and was used as an excuse by policymakers to send green taxes, tariffs and regulations soaring. Mann was an obscure academic who had just been given his PhD at the University of Massachusetts when his graph was published in the journal Nature in 1998. Within months – fêted everywhere from the New York Times

Controlling AI is the great challenge of our age

In 1997 the world chess champion Garry Kasparov was beaten by an IBM computer system called Deep Blue. It had defied all expectations, exploring some 300 million possible moves in one second. The most that skilled chess players can contemplate is about 110 moves at any given time. It was a seminal moment in the advance of artificial intelligence – even if not fully understood, writes Richard Susskind in How to Think About AI. People did not wholly grasp the impact of the exponential power of computers, nor that new ways would be found to develop systems that could achieve human expert-level performance. Fast forward to 2016 and to AlphaGo,

A piece of Mars to toy with

Since reading Helen Gordon’s The Meteorites, I keep catching myself in imaginary conversation with an Essex thatcher called Frederick Pratt. On 9 March 1923, he was working in a wheat field at Ashdon Hall Farm, near Saffron Walden, when he heard a strange ‘sissing’ sound and looked up to see ‘the earth fly up like water’. He later dug up, from a depth of two feet beneath the surface of the field, a stone weighing 1.27kg that had fallen from the sky. He took it to the police station, then on to the vicar, who shipped it off to the Natural History Museum. There we know it was classified as

We are all people of faith, whether we realise it or not

A.J. Ayer and other thinkers linked to the Vienna Circle famously contradicted themselves. A claim such as ‘all truths are scientific truths’ cannot itself be verified scientifically. So whether the assertion is true or false, it follows that there is at least one fact which isn’t a physical fact. Thus metaphysics buries its own undertakers. Yet Ayer’s ideas survive today in mutated form and influence other subjects besides philosophy. Though partly infected by relativism, the humanities have witnessed a growing impulse to redescribe everything in material and supposedly objective terms. The move is reductive. It involves restricting us to a world of causes rather than reasons, sounds rather than music.

Time is running out to tackle the dangers posed by AI

Is this what it felt like in the months before August 1914? Or during the years leading up to September 1939? The discussion around artificial intelligence produces a deep foreboding that we are in the grip of forces largely beyond our control. Are we sleepwalking towards disaster? That is the feeling I have after reading Genesis, a collaboration by Eric Schmidt, the former CEO of Google, Craig Mundie, the former chief research and strategy officer at Microsoft, and Henry Kissinger, who died, aged 100, soon after completing this book. They have crafted a holistic analysis of the social, political, psychological and even spiritual impacts that a superior machine intelligence would

How French absolutism powered a techno-progressive revolution

The Enlightenment is back. Despite the best efforts of the past decade of handwringing about cultural imperialism and wailing over machismo, money and majesty, the future keeps crashing in. The Science Museum has now laid its cards on the table with Versailles: Science and Splendour. Think gilt, not guilt. Is there anything in our lives that could compare to witnessing the first successfully grown pineapple? It’s marvellous, and unusual these days, to visit an exhibition and feel the colossal force of history without anyone bashing you over the head with infantile morality tales. Expanding on a 2010 display at the Palace itself, lead curator Anna Ferrari ought to be saluted

‘The wickedest man in Europe’ was just an intellectual provocateur

In Paris in 1740 the hangman publicly burned his most famous book. In England some of the best and brightest – Alexander Pope, Henry Fielding, Bishop George Berkeley, Jonathan Swift and John Wesley – queued up to destroy his reputation. The book was The Fable of the Bees (1714) and the author was Bernard Mandeville, popularly known as the Man-Devil. After Mandeville’s death in 1733, Samuel Johnson, perhaps the wisest Englishman who ever drew breath, admitted that the book had ‘opened my views into real life very much’. And David Hume, the great British philosopher, said the Man-Devil was, in fact, one of the most important figures in the development

Emilie du Châtelet – a lone voice among Enlightenment thinkers

Two things that amaze me about the European Enlightenment are the brilliance of its achievements and the stupidity with which it excluded much of humanity from its circle. Say, for example, you were an 18th-century Frenchwoman who wished to advance human understanding of the universe by doing experiments, discussing texts and comparing hypotheses with other experts. You could forget about joining any of the scientific or philosophical academies created for that purpose – they would not let you in. Instead, your best hope was to create a salon and make it fashionable. For this you had to be wealthy, so you could provide the snacks and wine, and you’d need

The surprising truth about old myths

I visited Mycenae for the first time this autumn. While the ruins of classical Athens can seem almost familiar, the ancient hillfort of a millennia earlier truly feels as though it belongs to the world of gods and heroes, of Homer and the Trojan War. If my imagination hadn’t been destroyed by decades of television, I could almost imagine myself there. One of the curiosities of findings in archaeology and DNA is that many of the old myths appear to be true Walking past ancient burial mounds and gazing at Argos in the near distance, I liked to think that I was in the footsteps of a real Agamemnon –

Wuhan wager: the $400 ‘bio bet’ that predicted the pandemic

At the end of this month, one of the world’s most renowned scientists will send $400 to a charity to settle a wager with another of the world’s most renowned scientists. We don’t yet know who will win, but it is likely to be the wrong person, in my view. The money will probably come from Cambridge, England, not Cambridge, Massachusetts. Rees thinks if the tragedy of Covid has an identified ‘villain’ it would aggravate tense US-China relations The two scientists involved are Lord (Martin) Rees, the Astronomer Royal and former president of the Royal Society, of Cambridge University, and Steven Pinker, the Harvard linguist, neuroscientist and author of many

The science of voting for Kamala Harris

The latest issue of Scientific American, a popular science monthly published by Springer Nature, contains an editorial endorsing Kamala Harris. She is the candidate that anyone who cares about science should vote for, apparently. Her positions on issues such as ‘the climate crisis’, ‘public health’ and ‘reproductive rights’ are ‘lit by rationality’ and based on ‘reality’, ‘science’ and ‘solid evidence’, while her opponent ‘rejects evidence’ in favour of ‘nonsensical conspiracy fantasies’. There’s something a bit odd about a science magazine getting embroiled in the grubby world of politics On the face of it, there’s something a bit odd about a storied science magazine getting embroiled in the grubby world of

Life among the world’s biggest risk-takers

The Italian actuary Bruno de Finetti, writing in 1931, was explicit: ‘Probability does not exist.’ Probability, it’s true, is simply the measure of an observer’s uncertainty; and in The Art of Uncertainty, the British statistician David Spiegelhalter explains how this extraordinary and much-derided science has evolved to the point where it is even able to say useful things about why matters have turned out the way they have, based purely on present evidence. Spiegelhalter was a member of the Statistical Expert Group of the 2018 UK Infected Blood Inquiry, and you know his book’s a winner the moment he tells you that between 650 and 3,320 people nationwide died from

Will the toughest problem in maths ever be solved?

For many, not just mathematicians, the Riemann hypothesis is the very definition of a supremely difficult problem that might be forever beyond our intellect. Most mathematicians had given up on it, being pessimistic about making any headway. But recently, the first progress – although not a solution – in more than 50 years has been made. The 165-year-old hypothesis was bequeathed to us by German mathematician Berhard Riemann. It deals with prime numbers – numbers that can only be divided by themselves and 1. For example, 2, 3, 5, 7, 13, 17, 19 and so on to infinity. Has our universe taken only one pathway out of a possible mathematical

Carlo Rovelli: Anaximander, from the archives

49 min listen

The Book Club has taken a short summer break and will return in September with new episodes. Until then, here’s an episode from the archives with the theoretical physicist Carlo Rovelli. Carlo joined Sam in March 2023 to discuss his book Anaximander and the Nature of Science and explain how a radical thinker two and a half millennia ago was the first human to intuit that the earth is floating in space. He tells Sam how Anaximander’s way of thinking still informs the work of scientists everywhere, how politics shapes scientific progress and how we can navigate the twin threats of religious dogma and postmodern relativism in search of truth. 

Clear, thorough and gripping: BBC2’s Horizon – The Battle to Beat Malaria

If you transcribed the narrator’s script in almost any episode of Horizon, you’d notice something striking: an awful lot of the phrases would end with a colon, and for one obvious reason: to play a neat trick on the viewers: that of making them keen to hear what comes next. (You get the idea.) Monday’s programme therefore began by explaining that the mosquito is ‘the target of one of medical science’s greatest quests: the battle to save millions of lives and end a scourge that has shaped human history: malaria’. Unusually for an uncompromising science documentary, the finale was a genuine tear-jerker Now in its 51st year, Horizon has spent

Under pressure: what might life look like on another planet?

Over the past three decades, astronomers have discovered planets orbiting Sun-like stars throughout the universe. This discovery ended 2,500 years of debate about whether worlds existed beyond our solar system, but it came with a shock. The most common kind of planet in the universe is the type of world that doesn’t exist in our small corner of the cosmos: what astronomers call ‘Super-Earths’ and ‘Sub-Neptunes’, planets with much greater masses than ours and which could, in theory, sustain life. Astronomers concluded a little over a decade ago that every star in the night sky hosts a family of worlds. Importantly for the search for life, one in five of

An AI visionary looks forward to the best of all possible worlds

In 1993 Vernor Vinge popularised the notion of the Singularity – the point at which exponentially accelerating trends in multiple technologies move out of control in an endless positive feedback loop. Vinge was a science fiction writer; Ray Kurzweil is not. In 1993 he had already pioneered optical character recognition and synthesisers that could precisely mimic real instruments. His mission crystallised into making Vinge’s conceit a reality. He is principal researcher and ‘AI visionary’ at Google – and principal proselytiser, too, through any number of portentously titled books. The Age of Spiritual Machines (1999) set out his stall; The Singularity is Near (2005) staked a claim for human-level intelligence in