1980

Nobel Prize in Physics

Why Anything Survived the Big Bang

James Cronin · Val Fitch

When particle physicists first wrote down the laws governing matter and antimatter, they assumed the two were mirror images of one another — charge reversed, spatial coordinates flipped, and nature otherwise indifferent to the swap. In 1964, James Cronin and Val Fitch tested this assumption by watching neutral kaons decay and noticed something that should have been impossible: the decay products were not quite symmetrical. The violation was absurdly small, about two parts in a thousand, the kind of deviation that in experimental physics usually means a faulty detector. It was not a faulty detector. The consequences of that tiny asymmetry are not small at all: for a universe made of matter and antimatter in equal parts to contain any matter whatsoever after annihilation, the two cannot be perfect opposites — and CP violation, as the phenomenon is called, is the clearest physical reason we have for why you, this planet, and everything you have ever touched is here at all rather than a thin wash of photons drifting through a featureless void.

Nobel Prize in Chemistry

Reading the Code, Letter by Letter

Paul Berg · Walter Gilbert · Frederick Sanger

By 1980, the genetic code had been cracked, but reading it in practice still required methods that were, by the standards of the ambitions they served, staggeringly laborious. Paul Berg had already shown, by the mid-1970s, that DNA from different organisms could be cut and rejoined — recombinant DNA — earning him half the prize for opening that door. The other half went to Walter Gilbert and Frederick Sanger, who had independently devised techniques for actually reading the sequence of bases along a DNA strand. Gilbert's chemical method was clever; Sanger's chain-termination approach, which used modified nucleotides to stall copying at known points, proved faster, cleaner, and almost effortlessly scalable. That scalability would eventually make the Human Genome Project possible. It was also, unremarkably for a man of such industry, Sanger's second Nobel Prize in Chemistry — a distinction shared at that point only by Marie Curie, Linus Pauling, and John Bardeen, which is to say, by people operating at an altitude most scientists only see from the ground.

Nobel Prize in Physiology or Medicine

Mouse Grafts and the Meaning of Self

Baruj Benacerraf · Jean Dausset · George D. Snell

George Snell spent the better part of his career at the Jackson Laboratory in Bar Harbor doing something that sounds unglamorous: breeding generations of mice to see which ones would accept skin grafts from which other ones. Out of that meticulous, slightly obsessive programme of crosses and backcrosses came the major histocompatibility complex — the gene cluster now understood to determine the immune system's fundamental sense of self and not-self. Jean Dausset found the human equivalent while working with blood from donors and transfusion patients in postwar Paris, identifying the HLA system on the surface of human cells. Baruj Benacerraf then showed how genes within the MHC control whether a T-cell can even recognise a particular foreign molecule — explaining not only why organ transplants fail but why two people exposed to the same pathogen can have wildly different experiences of it. Before this work, transplant surgeons were essentially operating in the dark, matching donors to recipients by intuition and luck. Modern transplant medicine, such as it is, rests almost entirely on the logic these three assembled, mouse graft by mouse graft.

Nobel Prize in Literature

Photocopies Passed in Secret

Czesław Miłosz

Czesław Miłosz had done what many Polish intellectuals of his generation could not bring themselves to do: he defected, in 1951, from the communist-controlled Polish diplomatic service in Paris, knowing he would be branded a traitor at home and that his books would be banned for decades. What followed was a kind of gilded exile — a professorship at Berkeley, decades of writing in Polish for an audience that could not easily buy his books — and a long, difficult reputation as someone too complex to be a simple cold-war poster figure. The Captive Mind, his 1953 study of how intelligent people accommodate themselves to totalitarian systems, is unsettling because it refuses to make the capitulators into villains; they are, Miłosz insists, comprehensible. When the Nobel Committee announced the prize, most Western newsrooms had to ask how to spell his name. In Poland, where his books were still officially unavailable, people passed photocopies. The announcement did not reach them through official channels.

Nobel Peace Prize

A Light Aimed at a Dark Prison

Adolfo Pérez Esquivel

Adolfo Pérez Esquivel was an Argentine sculptor and architecture teacher who, in the early 1970s, concluded that building beautiful things while the state was destroying people required a more active response. He co-founded Servicio Paz y Justicia, a network devoted to non-violent resistance and human rights documentation across Latin America, operating at a time when documenting such things was itself a punishable offence in much of the region. In 1977, the Argentine military junta arrested and tortured him; they held him for fourteen months without trial, then released him under house arrest. Two years after his release, the Nobel Committee gave him the prize. The effect was to shine a light on Argentina's dirty war at exactly the moment the junta most preferred it remained dark — which is, in its way, the most eloquent commentary on what the prize is actually for.

Sveriges Riksbank Prize in Economic Sciences

An Economy, Written as Equations

Lawrence R. Klein

In the late 1940s and 1950s, Lawrence Klein took the theoretical scaffolding of Keynesian macroeconomics and asked what would happen if you turned it into actual equations — hundreds of them, all linked, all calibrated against real data — so that the whole national economy could be modelled as a system of simultaneous relationships between consumption, investment, employment, prices, and money. The ambition was considerable; the computers required to run the resulting models were, at first, barely equal to the task. Klein's Wharton Econometric Forecasting model eventually became a tool widely used by governments, central banks, and corporations for planning and policy analysis. He knew the models were imperfect — that any equation capturing human economic behaviour across a whole nation will be wrong in ways that are predictable only in retrospect — and his own caution about their limits was frequently less evident in his users than in himself. The prize recognised not the accuracy of the forecasts but the intellectual architecture of the attempt: that an economy could be thought of as a coherent, mathematically tractable system was not obvious before Klein made it so.

ACM A.M. Turing Award

Proving a Program True

Turing Award

C. Antony R. Hoare

Tony Hoare had been quietly horrified, for most of his career, by the gap between what software was supposed to do and what it demonstrably did. His response was to build formal systems for closing it: Hoare logic, developed in 1969, provided a framework of preconditions and postconditions that could, in principle, let you prove mathematically that a program behaved as specified — much as you might prove a theorem. His Communicating Sequential Processes formalism, published in 1978, gave similar rigour to concurrent programs, where multiple processes run simultaneously and interact in ways that are notoriously difficult to reason about. The Turing Award citation was richly deserved. That neither framework achieved anything like universal adoption in the software industry is not a reflection on the ideas; it is a reflection on an industry that, then as now, tends to ship and apologise rather than verify and ship. Hoare himself once described the null pointer — a concept he introduced and later came to regret — as his billion-dollar mistake. A man willing to say that in public is to be trusted.

Alvarez hypothesis: asteroid impact caused the end-Cretaceous mass extinction

Iridium in the Clay

Luis Alvarez was a Nobel laureate physicist; his son Walter was a geologist fascinated by a thin, rust-coloured clay layer at the boundary between the Cretaceous and Paleogene periods in the limestone cliffs near Gubbio, Italy. The layer marked the moment, 66 million years ago, when roughly three-quarters of all species on Earth abruptly disappeared. In 1980, the Alvarezes, with chemists Frank Asaro and Helen Michel, published their analysis of the clay: it was saturated with iridium, a metal essentially absent from the Earth's crust but abundant in certain meteorites. Their interpretation was that a massive extraterrestrial impactor had struck the Earth, vaporised, and distributed its iridium globally. The same iridium anomaly was subsequently found at the Cretaceous-Paleogene boundary at sites on every continent. Palaeontologists, accustomed to explaining mass extinction through slow, gentle processes, received the proposal with considerable scepticism. Then, in 1991, petroleum geologists mapping the Yucatán subsurface found a buried crater some 180 kilometres across. It had not been the outcome the sceptics had anticipated.

WHO declares smallpox eradicated

The Disease That Stopped Existing

Smallpox had been killing human beings for at least three thousand years — Ramesses V appears to have died of it, and it killed perhaps three hundred million people in the twentieth century alone — when the World Health Assembly convened in Geneva on 8 May 1980 to formally declare that it no longer existed anywhere outside two locked freezers, one in Atlanta and one in Novosibirsk. The eradication campaign, coordinated by the WHO across more than forty countries and waged with ring vaccination, surveillance, and an almost military persistence through conflicts, famines, and the indifference of local bureaucracies, was the most successful public health operation ever conducted. The last naturally occurring case belonged to Ali Maow Maalin, a Somali hospital cook who developed symptoms in October 1977 and, to his lasting credit, survived. No human being has caught smallpox from nature since. It remains the only time a disease has been deliberately driven to extinction — a fact that sounds unremarkable until you consider what the world looked like before and understand that it needed to be done entirely with vaccines, maps, and human organisation, and that it worked.

Voyager 1 flyby of Saturn

Rings Braided, Not Smooth

When Voyager 1 swept within 124,000 kilometres of Saturn's cloud tops on 12 November 1980, the textbook picture of the ringed planet — a few broad, smooth bands of ice and rock, separated by clean gaps — began dissolving almost immediately. The spacecraft's cameras resolved the rings into hundreds of distinct ringlets, many of them kinked or braided or otherwise behaving in ways that orbital mechanics had not, prior to that morning, been asked to explain. The F ring, narrow and wispy, appeared twisted into a helix by the gravitational influence of two small moons flanking it — moons not previously known to exist, two of five new ones discovered during the flyby. Other ringlets had sharp, inexplicably precise edges that theorists scrambled to account for with models involving more shepherd moons. Saturn had been studied through telescopes for three and a half centuries; Voyager rewrote the description in a single afternoon, and left more questions behind it than it answered.

Eruption of Mount St. Helens

Vancouver, This Is It

Mount St. Helens had been building toward something since March 1980, when it woke from a 123-year sleep with a series of earthquakes and steam vents that brought geologists from across the country to watch. They set up monitoring equipment, drew exclusion zones, and settled in to observe — confident that the mountain would behave in the ways volcanoes were understood to behave, with warning sufficient for orderly evacuation. At 8:32 on the morning of 18 May, a magnitude 5.1 earthquake triggered the collapse of the entire north face of the volcano in a single catastrophic landslide, the largest in recorded history, which uncorked the pressurised magma chamber beneath with a lateral blast travelling at roughly 1,000 kilometres per hour. The summit dropped 400 metres in moments. Ash fell across eleven states. Fifty-seven people died, including volcanologist David Johnston, who was monitoring the mountain from a ridge six miles away and had time only to radio 'Vancouver! Vancouver! This is it!' before the blast reached him. What geologists learned about lateral volcanic blasts that morning became the foundation for every eruption risk assessment conducted since.