
From Nautilus: “It’s impossible to know exactly when each of the five mutations happened. When, deep in my marrow, one thing after another went awry, and divided my life. Like all people who have been ill, my life is split into Before and After. Did a mutation occur the summer Before, when my gallbladder inexplicably started to act up, when I got a surprisingly terrible case of hand-foot-mouth virus for an adult? Perhaps one occurred in college, silently changing my future while I took my first organic chemistry lab, being careless with a solvent. Maybe the first mutation occurred when I was 2 years old, wearing footie pajamas soaked in flame retardant. Is it possible, even, that the mutation happened generations before I was even born, perhaps when my grandmother worked in her family’s dry-cleaning shop, the chemicals triggering a change deep in one of her cells that eventually lead to her death, my father’s, and nearly mine?”
Astronomers say they have detected a sign of life on a distant planet

From the New York Times: “A team of researchers is offering what it contends is the strongest indication yet of extraterrestrial life, not in our solar system but on a massive planet, known as K2-18b, that orbits a star 120 light-years from Earth. A repeated analysis of the exoplanet’s atmosphere suggests an abundance of a molecule that on Earth has only one known source: living organisms such as marine algae. “It is in no one’s interest to claim prematurely that we have detected life,” said Nikku Madhusudhan, an astronomer at the University of Cambridge and an author of the new study. Still, he said, the best explanation for his group’s observations is that K2-18b is covered with a warm ocean, brimming with life. “This is a revolutionary moment,” Dr. Madhusudhan said. “It’s the first time humanity has seen potential biosignatures on a habitable planet.” The study was published Wednesday in the Astrophysical Journal Letters.”
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