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Category: Life

What is life? Its vast diversity defies easy definition

What is life? Its vast diversity defies easy definition

Carl Zimmer writes: “It is commonly said,” the scientists Frances Westall and André Brack wrote in 2018, “that there are as many definitions of life as there are people trying to define it.” As an observer of science and of scientists, I find this behavior strange. It is as if astronomers kept coming up with new ways to define stars. I once asked Radu Popa, a microbiologist who started collecting definitions of life in the early 2000s, what he thought…

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An ancient Greek approach to risk and the lessons it can offer the modern world

An ancient Greek approach to risk and the lessons it can offer the modern world

A vase from ancient Greek civilization depicts Apollo consulting the oracle of Delphi. G. Dagli Orti/DeAgostini Collection via Getty Images By Joshua P. Nudell, Westminster College Most of us take big and small risks in our lives every day. But COVID-19 has made us more aware of how we think about taking risks. Since the start of the pandemic, people have been forced to weigh their options about how much risk is worth taking for ordinary activities – should they,…

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John Keats’ concept of ‘negative capability’ – or sitting in uncertainty – is needed now more than ever

John Keats’ concept of ‘negative capability’ – or sitting in uncertainty – is needed now more than ever

The gravestone of John Keats in Rome’s ‘non-Catholic’ cemetery. Dan Kitwood/Getty Images By Richard Gunderman, Indiana University When John Keats died 200 years ago, on Feb. 23, 1821, he was just 25 years old. Despite his short life, he’s still considered one of the finest poets in the English language. Yet in addition to masterpieces such as “Ode to a Nightingale” and “To Autumn,” Keats’ legacy includes a remarkable concept: what he called “negative capability.” The idea – which centers…

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What makes Elon Musk and Carl Sagan worlds apart

What makes Elon Musk and Carl Sagan worlds apart

Shannon Stirone writes: There’s no place like home—unless you’re Elon Musk. A prototype of SpaceX’s Starship, which may someday send humans to Mars, is, according to Musk, likely to launch soon, possibly within the coming days. But what motivates Musk? Why bother with Mars? A video clip from an interview Musk gave in 2019 seems to sum up Musk’s vision—and everything that’s wrong with it. In the video, Musk is seen reading a passage from Carl Sagan’s book Pale Blue…

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Economic growth has become a malignancy

Economic growth has become a malignancy

Here is Dr. Mike Ryan speaking at a @trocaire event yesterday about the catastrophe we're walking into. I genuinely think this is the most important clip you'll ever see. pic.twitter.com/eKxBWEu7SM — Eoghan Rice (@rice_e) February 18, 2021 Mike Ryan, World Health Organization

The unified cosmic vision of Alexander von Humboldt

The unified cosmic vision of Alexander von Humboldt

Algis Valiunas writes: The presiding scientific genius of the Romantic age, when science had not yet been dispersed into specialties that rarely connect with one another, Alexander von Humboldt wanted to know everything, and came closer than any of his contemporaries to doing so. Except for Aristotle, no scientist before or since this German polymath can boast an intellect as universal in reach as his and as influential for the salient work of his time. His neglect today is unfortunate…

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Human-made stuff now outweighs every living thing on Earth

Human-made stuff now outweighs every living thing on Earth

ScienceAlert reports: All of the Amazon’s splendid greenery. Every fish in the Pacific. Every microbe underfoot. Every elephant on the plains, every flower, fungus, and fruit-fly in the fields, no longer outweighs the sheer amount of stuff humans have made. Estimates on the total mass of human-made material suggest 2020 is the year we overtake the combined dry weight of every living thing on Earth. Go back to a time before humans first took to ploughing fields and tending livestock,…

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Signs of recent volcanic eruption on Mars hint at habitats for life

Signs of recent volcanic eruption on Mars hint at habitats for life

The New York Times reports: Mars was once home to seas and oceans, and perhaps even life. But our neighboring world has long since dried up and its atmosphere has been blown away, while most activity beneath its surface has long ceased. It’s a dead planet. Or is it? Previous research has hinted at volcanic eruptions on Mars 2.5 million years ago. But a new paper suggests an eruption occurred as recently as 53,000 years ago in a region called…

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Pope Francis: A crisis reveals what is in our hearts

Pope Francis: A crisis reveals what is in our hearts

Pope Francis writes: In this past year of change, my mind and heart have overflowed with people. People I think of and pray for, and sometimes cry with, people with names and faces, people who died without saying goodbye to those they loved, families in difficulty, even going hungry, because there’s no work. Sometimes, when you think globally, you can be paralyzed: There are so many places of apparently ceaseless conflict; there’s so much suffering and need. I find it…

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‘Pristine’ extraterrestrial organic compounds found on meteorite may shed light on origin of life on Earth

‘Pristine’ extraterrestrial organic compounds found on meteorite may shed light on origin of life on Earth

Vice reports: On a dark winter night in 2018, hundreds of people across the Great Lakes region witnessed a radiant meteor brighten the skies. Mere days after the fireball streaked overhead on that night in January, scientists were able to track down precious pieces of the ancient space rock using weather radar reports. The scattered remnants of the object, known as the Hamburg meteorite, contain a “high diversity” of extraterrestrial organic compounds that are preserved “in a pristine condition,” according…

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Migratory bird flies non-stop over 7,500 miles from Alaska to New Zealand

Migratory bird flies non-stop over 7,500 miles from Alaska to New Zealand

The Guardian reports: A bird said to have the aerodynamic build of a “jet fighter” has been tracked flying more than 12,000km (7,500 miles) from Alaska to New Zealand, setting a new world record for avian non-stop flight. The bar-tailed godwit set off from south-west Alaska on 16 September and arrived in a bay near Auckland 11 days later, having flown at speeds of up to 55mph. The male bird, known as 4BBRW in reference to the blue, blue, red…

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The molecular biologist, Jacques Monod, saw chance as one of the ‘secrets of life’

The molecular biologist, Jacques Monod, saw chance as one of the ‘secrets of life’

Sean B. Carroll writes: Jacques Monod arrived in Paris to some dreadful news. On June 5, 1944, four years into the German occupation of France during World War II, he was supposed to meet with fellow leaders in the French Resistance when his assistant, Geneviève Noufflard, told him that several commanders within the greater Paris region had just been caught by the Gestapo. Monod was pretty sure that at least one of those arrested knew about the rendezvous he was…

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The value of uncertainty

The value of uncertainty

Mark Miller et al write: Understanding our own relationship with uncertainty has never been more important, for we live in unusually challenging times. Climate change, COVID-19 and the new order of surveillance capitalism make it feel as if we are entering a new age of global volatility. Where once for many in the West there were just pockets of instability (deep unpredictability) in a sea of reliability – albeit sometimes in disagreeable structures and expectations – it lately seems as…

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Physics and information theory give a glimpse of life’s origins

Physics and information theory give a glimpse of life’s origins

Natalie Elliot writes: How did life originate? Scientists have been studying the question for decades, and they’ve developed ingenious methods to try to find out. They’ve even enlisted biology’s most powerful theory, Darwinian evolution, in the search. But they still don’t have a complete answer. What they have hit is the world’s most theoretically fertile dead end. When scientists look for life’s origins, they usually work in one of two directions. They work backwards in time through the record of…

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For Schopenhauer, happiness is a state of semi-satisfaction

For Schopenhauer, happiness is a state of semi-satisfaction

David Bather Woods writes: On 13 December 1807, in fashionable Weimar, Johanna Schopenhauer picked up her pen and wrote to her 19-year-old son Arthur: ‘It is necessary for my happiness to know that you are happy, but not to be a witness to it.’ Two years earlier, in Hamburg, Johanna’s husband Heinrich Floris had been discovered dead in the canal behind their family compound. It is possible that he slipped and fell, but Arthur suspected that his father jumped out…

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The return of existentialism

The return of existentialism

Carmen Lea Dege writes: Existentialist ideas have seen a remarkable comeback during the COVID-19 pandemic, from Albert Camus’s frequently invoked novel The Plague, Friedrich Nietzsche’s turn to tragedy, and Simone de Beauvoir’s and Jean-Paul Sartre’s critique of bad faith, to Giorgio Agamben’s Carl Schmitt–inspired musings about the state of emergency and what Michel de Montaigne, Martin Heidegger, and Blaise Pascal can teach us about facing death. The thread running through all these appeals to existentialism is a sensitivity to human…

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