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How science has shifted our sense of identity, a US plan to DNA-print immigrants worries bioethicists and the physics Nobel goes to exoplanet and cosmology pioneers.

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James Peebles, Michel Mayor and Didier Queloz, The Nobel Prize in Physics 2019

Astronomers Michel Mayor and Didier Queloz will share half of the 2019 Nobel Prize in Physics for their 1995 discovery of the first exoplanet orbiting a Sun-like star. They detected the planet through its tiny gravitational pull on the star 51 Pegasi, a technique that is now used to study some of the more than 4,000 exoplanets known to exist.

Cosmologist James Peebles will receive the other half of this year’s physics Nobel for his widely influentialtheoretical work describing how the cosmos evolved following the Big Bang. His insights include how the cosmic microwave background came to diffuse the Universe, and how dark matter helped to conjure the galaxies and clusters we know and love from a nearly uniform initial state.

Nature | 6 min read

Read more about Michel Mayor and Didier Queloz’s 1995 discovery in an expert Nature News & Views analysis from astronomer Eliza Kempton.

Reference: Mayor and Queloz’s 1995 Nature paper

A US government plan to routinely collect DNA data from people held in immigration detention centres is sparking concerns among bioethicists about privacy and discrimination. More than 40,000 people are currently being held in such centres across the country, and the plan would potentially see all their DNA profiles added to an FBI database alongside those gathered from people who have been arrested or convicted of crimes. Because family members share DNA, the government’s plan also has implications for immigrants’ relatives, including US citizens.

Nature | 5 min read

An advanced climate model is predicting how a rare atmospheric phenomenon currently heating the air above Antarctica will drive hot, dry winds across eastern Australia over the next three months. It’s the first time meteorologists have been able to predict this kind of sudden warming event in the Southern Hemisphere. The forecast has excited scientists because it shows how far the field has come in understanding the stratosphere — the second major layer of Earth’s atmosphere — and its effects on weather.

Nature | 4 min read

Almost one in five land vertebrates are traded on wildlife markets — a proportion 40–60% higher than previous estimates. The findings come from one of the most comprehensive studies of the international wildlife trade so far. The team found that 5,579 of the 31,745 species of mammal, bird, amphibian and reptile analysed — around 18% — are being bought and sold. Many traded species are threatened or vulnerable to extinction.

Nature | 4 min read


"What Cigarette Do You Smoke, Doctor?" advertisement for Camel cigarettes from an American magazine, c1950

A new book by historian Sarah Milov manages to bring fresh insight into the well-trodden tale of the tobacco industry’s shameful campaign to delay regulation while millions died because of its products, writes reviewer Felicity Lawrence. Milov adds a nuanced account of how the United States government turned tobacco merchant to boost the industry.

Nature | 6 min read

Biological advances have repeatedly changed who we think we are, writes historian Nathaniel Comfort. He argues that many of the worst chapters of history result from ‘scientism’: the belief that science is the only valid way to understand the world and solve social problems. “Where science has often expanded and liberated our sense of self, scientism has constrained it,” writes Comfort.

Nature | 12 min read

This is the third of a series of essays on the roots of today’s research system. Read why, on Nature’s 150th anniversary, we’re looking back to learn how to navigate the present.

Google’s machine-learning algorithm, trained on squillions of emails, will complete your sentences for you in Gmail. What happens when The New Yorker trains it on its archive of standard-setting long-form journalism? Or on the opinions of psychologist Steven Pinker? Take a deep dive into the myriad ways that computer scientists have tackled the thorny problem of human language while you find out.

The New Yorker | 37 min read


Wonderpus Octopus photographed in swimming in the Lembeh Strait, Indonesia


Astronomer Scott Sheppard has discovered 20 new moons orbiting Saturn, bringing its total to 82 and moving it ahead of Jupiter, which has 79. Sheppard’s institution, the Carnegie Institution for Science, is asking the public for help in naming them. (Carnegie Institution for Science)

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