Science

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

What will we do when all our jobs are done for us?

Laughs are in short supply in the academic world unless that world is serving as the victim of satire. So full marks to the Swedish philosopher Nick Bostrom for loading Deep Utopia – his reflections on life in a ‘solved world’, perfected by technology and science – with self-mockery and slapstick. Bostrom isn’t the first to fret about the travails of extreme leisure. John Maynard Keynes feared that economic abundance would produce more disgusting aristo-like behaviour. It’s nice to see how mighty minds can be so wrong. Bostrom cites John Stuart Mill being seriously depressed by the prospect, as humanity solved its problems, of there not being enough music to

Those magnificent men and their stargazing machines

Where is science bred? Is it where the physical circumstances are right – clear skies for astronomy, for example? Where raw materials are abundant – coal for organic chemistry? Where minds freely meet? Where the enlightened patron rules? Violet Moller’s first book, The Map of Knowledge, examined the spread through the centuries of the ideas of Galen, Euclid and Ptolemy by focusing on seven, mainly Mediterranean cities, from Alexandria to Venice, where scientific knowledge was gathered, augmented and promulgated anew, ensuring the survival of classical learning into the modern period. But why these men and these cities? Are people or places the drivers? Is geography a reliable guide, a storytelling

The endless fascination of volcanoes

Volcanoes, volcanoes, volcanoes. You wait years for a good book or a film about volcanoes to come along and then they blow up all at once. In 2022, Sara Dosa’s incredible, unmissable – incroyable! incontournable! – documentary about the eccentric French filmmakers and volcanologists Katia and Maurice Krafft, Fire of Love, was nominated for an Oscar. It should have won. Then, last year, volcanology’s own Brian Cox, Clive Oppenheimer – professor of volcanology at the University of Cambridge and Werner Herzog’s companion and guide in his documentary film about volcanoes, Into the Inferno (2016) – published Mountains of Fire: The Secret Lives of Volcanoes. Now erupting on to the scene

A surprising number of scientists believe in little green men

In 1928, a young physicist and engineer named Karl Jansky began working at Bell Telephone Laboratories, tasked with investigating any sources of static that could interfere with long-distance radio communication. Cobbling together a system of antennae on a merry-go-round, he successfully found that thunderstorms were annoying in just this way. But there was a small bit of noise left over, and he kept scanning the sky to locate the culprit. To his surprise, he eventually found it was coming from Sagittarius in the centre of the Milky Way. He christened it ‘star-noise’. We now know that he had correctly identified the emanations from a supermassive black hole; and, quite by

Why won’t Chris Packham have a real debate on climate?

On Sunday, the BBC did something unusual. It invited Luke Johnson, a climate contrarian, to join a panel with Laura Kuenssberg to discuss net zero. As followers of this debate will know, the BBC’s editorial policy unit issued guidance to staff in 2018 saying: ‘As climate change is accepted as happening, you do not need a “denier” to balance the debate.’ Although it did allow for exceptions to this rule: ‘There are occasions where contrarians and sceptics should be included within climate change and sustainability debates.’ Presumably this was one such occasion. I can’t help thinking Packham’s ‘devastating put-down’ would have been more effective if it had been true The

What we owe to the self-taught genius Carl Linnaeus

Carl Linnaeus and Georges-Louis Leclerc, Comte de Buffon were both taxonomists, born in the same year (1707), but apart from that they had little in common and never met. Buffon was French, Linnaeus Swedish. Buffon was suave, elegant, tall and handsome (Voltaire said he had ‘the body of an athlete and the soul of a sage’), whereas Linnaeus was a bumptious little man (under 5ft), who was widely regarded as uncouth. Buffon’s funeral was attended by 20,000 mourners but Linnaeus died almost forgotten, after suffering from a brain disease for 15 years. Yet the Linnaean system of taxonomy has survived much better than Buffon’s, which was hardly a system at

Are we finally beginning to understand gravity?

The question of why things fall has puzzled our species since we crawled out from the darkness of our primitive ignorance. Aristotle was the first to offer a serious theory. He proposed that each of the four elements (earth, air, fire, water) had a natural place to which it innately wanted to return. Fire and air rise because their place is in the heavens, whereas earth and water return to the Earth. Aristotelian philosophy had such a profound impact on human thought that this view prevailed for nearly 2,000 years. Only with the Renaissance and the ideas of Kepler and Galileo was it finally challenged; and only by standing on

I’ve found the cure for climate anxiety

A new documentary, Climate: The Movie, by the maverick filmmaker Martin Durkin, is becoming a phenomenon, though it’s received almost no publicity in the mainstream media. It rejects the idea that we’re in the midst of a ‘climate emergency’, so that’s hardly surprising. But it has already racked up millions of views online and been translated into ten languages. I watched it on YouTube on Monday and can confirm it’s a dazzlingly entertaining film that distils the case against climate alarmism into a succinct 80 minutes. One of the reasons it’s so hard to challenge the narrative about climate change is because it supposedly reflects the ‘settled’ scientific consensus. We’re

Dinosaurs, dogma and the Victorian mind

In March 1860, shortly after The Origin of Species was published, Charles Darwin wrote to Leonard Horner thanking him for some surprising information. ‘How curious about the Bible!’ he exclaimed. Horner had taken aim at the marginal notes that were printed in the standard (and ubiquitous) Authorised, or King James, Version. These began with the date of creation, 4004 BC, as calculated by Archbishop James Ussher in the 17th century. Darwin was astonished. ‘I had fancied that the date was somehow in the Bible,’ he wrote. The disturbing ‘monsters’ dug from the cliffs of Lyme Regis did not sit well with the literal reading of Genesis The fact that Darwin,

Life is a far richer, more complicated affair than we imagined

In 1982, the philosopher Karl Popper suggested that ‘science may be described as the art of systematic simplification’. In this mind-stretching book, Philip Ball seems to wish to prove Popper’s statement both wrong and correct. On the one hand, Ball is a clarifier supreme. It is hard to imagine a more concise, coherent, if also challenging, single volume written on the discoveries made in the life sciences over the past 70 years. The author is a former editor of Nature and has been privy to the flow of cutting-edge results coming from the world’s leading research programmes over the past decades. How Life Works has a sense of up-to-the-minute authority.

Now imagine a white hole – a black hole’s time-reversed twin…

There are many ways to measure the course of human history and each will give an insight into one or more of the various qualities that have made us the most successful great ape. Every major advance, whether in war or art or literature, requires imagination, that most amazing of human capacities, and the ability to ask ‘What if?’ – to take the world from a different perspective. Nowhere is this more apparent than in the history of science. While there is an inherent provincialism in revolutions in art and literature, progress in science is universal, and moves, like Dante’s Hell, in concentric circles of ever deeper understanding. It is

Sounds and sweet airs that give delight

Caspar Henderson writes beguiling books about the natural world, full of eyecatching detail and plangent commentary. His Book of Barely Imagined Beings: A 21st-century Bestiary came out in 2012. A Book of Noises is a worthy companion – a pursuit of auditory wonders, a paean to the act of listening and a salute to silence. Item: the music of the spheres. (The planets’ orbits, proving unideal and elliptical, suggested to the musically minded astronomer Johannes Kepler an appropriately sad, minor-keyed leitmotif for the Earth, where, he felt, misery and famine held sway’.) Item: the world’s loudest sound. (The asteroid Chicxulub that killed the dinosaurs 66 million years ago; also an

Why driving above the speed limit is a mug’s game 

Imagine you are choosing between two proposed road-improvement plans, but have the budget for only one. Both of the roads mooted for improvement are 20 miles long, and your sole aim is to reduce average journey time by as much as possible. Which would you choose? Someone travelling slowly to begin with has more time on the road to profit from any gain in speed 1) Improving Road A, which increases the average speed from 20 to 25mph (i.e. 25 per cent faster). or 2) Improving Road B, which increases the average speed from 40 to 65mph (62.5 per cent faster). The majority of people, including many experts, instinctively plump