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Anish Moonka

@anishmoonka

Apr 14

https://x.com/anishmoonka/status/2043696336567222393

The research behind this is wild. Your sperm carries a set of instructions that tell your genes when to turn on and off. A Duke University study found that THC rewrites those instructions. The more weed in your system, the bigger the changes. It goes straight for the genes your future embryo needs in its first week of life.

I had to read the "day 3 crash" part twice. For the first three days after fertilization, an embryo runs entirely on the mother's DNA. Day 3, the father's genes switch on. If those genes carry cannabis damage, the embryo just stops growing. Fertility doctors see this happen in their labs: embryos that fertilized fine and looked healthy on day 2 go completely still by day 5.

Boston University tracked 1,535 couples trying to have a baby. Men who smoked weed once a week or more doubled their partner's miscarriage risk. That number held up even when the woman herself never touched cannabis. And the miscarriages clustered in the first 8 weeks, right when the father's damaged DNA would be doing the most harm.

Duke also found that the specific genes THC alters in sperm overlap with genes linked to autism. One of those genes, called DLGAP2, helps brain cells communicate with each other. It was changed in cannabis users' sperm. When researchers bred THC-exposed male rats and checked their offspring, the same altered gene pattern showed up in the pups' brains. The damage crossed a generation.

Weed has gotten way stronger over the last 30 years. THC content was about 4% in the 1990s but nearly quadrupled to 15% by 2018, and modern dispensary strains regularly sit at 20-30%. Concentrates go up to 95%.

Quitting for about 11 weeks (one full cycle of sperm production) reverses some of the DNA changes. Not all of them. Duke's lead researcher says men should stop at least 6 months before trying for a baby. Half of your kid's genetic blueprint comes from you, and right now, THC is editing that blueprint before conception even happens.

https://x.com/anishmoonka/status/2043696336567222393

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Part 2. Your sperm has cannabis receptors built into it. Not metaphorically. Actual molecular receptors, sitting on the head and midsection of each sperm cell, that bind to cannabis-like chemicals your own body produces. These chemicals are called endocannabinoids, and they run one of the oldest control systems in human reproduction.

Your reproductive tract uses endocannabinoids like a GPS for sperm. Right after ejaculation, levels are high. That keeps sperm calm, conserves their energy, prevents them from burning out before they get anywhere near the egg. As sperm travel deeper into the female reproductive tract, endocannabinoid levels gradually drop. That drop is the activation signal. Sperm speed up, their tails start beating harder, and they prepare to break through the egg's outer shell.

This system is ancient. Sea urchin sperm respond to the exact same chemicals through the exact same receptors. It has been evolving for over 500 million years.

THC from weed locks onto those same receptors at massively higher doses. Your body's own endocannabinoids operate at nanomolar concentrations, billionths of a gram, tuned with surgical precision. A joint delivers THC to those receptors at concentrations thousands of times higher. Researchers in Rome found that when THC hits the CB1 receptor on human sperm, it shuts down the mitochondria (the tiny engines inside each sperm cell that power its movement). Forward motion dies.

The damage continues at the egg. For a sperm to fertilize an egg, it needs to go through a one-time chemical burst on its tip called the acrosome reaction, which burns through the egg's protective coating. Your body's own endocannabinoids time that burst so it fires at exactly the right moment. THC jams that timing. The burst either fires too early, wasting it before the sperm reaches the egg, or never fires at all.

A team from Belfast and Rome compared semen samples from fertile and infertile men. Infertile men had significantly lower levels of the body's own endocannabinoids in their semen. Their internal system was already running low before any external cannabis ever entered the picture.

Half of your child's DNA comes from sperm that has to swim through the reproductive tract, time a chemical explosion, and penetrate an egg. Every one of those steps is coordinated by the exact system that THC floods and disrupts.

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Anish Moonka

@anishmoonka

Apr 13

https://x.com/anishmoonka/status/2043435955437138298

Orcas eat great white sharks. They hunt seals, dolphins, and baby whales. They have never killed a single human in the open ocean. Not once, in all of recorded history.

An orca's brain weighs up to 15 pounds. Yours weighs about 3. They have roughly double the brain cells we do in the regions that handle complex thought. A neuroscientist at Emory named Lori Marino put an orca brain in an MRI and found these animals can tell different species apart underwater. They do it by sending out clicks that bounce off everything around them and come back as a kind of 3D sound map (this is called echolocation). From 500 feet away, an orca knows you're a human and not a seal. It skips you on purpose.

The answer is culture. Orcas around the world are divided into at least 10 separate populations, each with its own food rules, its own language, and its own way of hunting. All of it learned from their mothers. One population eats only fish. Another eats only marine mammals like seals and sea lions. These two populations can live in the exact same water and never swap a single meal. A baby orca learns what food is from its mother, and that list stays the same for life.

In the Pacific Northwest, one population called the Southern Residents eats almost nothing but Chinook salmon. Scientists have documented them killing harbor porpoises 78 times over six decades, carrying the dead porpoises in their mouths, and never once eating them. Even when the group was starving. A 2023 study in Marine Mammal Science looked at all 78 cases and concluded it was play. These orcas would rather go hungry than eat something their culture says isn't food.

Researchers studying whale behavior in 2001 found that orca cultural traditions "appear to have no parallel outside humans." Each family group has its own dialect, its own version of the language. Calves spend about two years just learning how to make all the sounds their family uses. Mothers will slow down a hunt on purpose so their young can watch.

In 2005, a 12-year-old kid was swimming in Helm Bay, Alaska when an orca came at him full speed. At the very last second, the orca seemed to realize it was charging a human. It bent its entire body in half and turned back to open water. In captivity, it goes differently. SeaWorld's Tilikum killed three people during his life in a concrete tank. Research from 2016, published in the journal Animals, traced it to psychological collapse from being locked away from the family bonds orcas need to stay stable.

I think calling this a "mystery" undersells the science. Orcas decide what to eat based on culture, not instinct. No orca mother has ever taught her calf to hunt humans, so no orca hunts humans. Only about 75 of those salmon-eating Southern Residents are still alive. Their pregnancy failure rate is 69% because we've destroyed their salmon runs. They won't break their food culture to survive. Whether we care enough to protect theirs is the part that actually matters.

https://x.com/anishmoonka/status/2043435955437138298

Thank you for reading my article ❤️

If it held your attention, a follow @anishmoonka keeps more coming.

Part 2. Great white sharks, the animal you grew up being terrified of, will abandon their hunting ground for an entire year if a single orca swims through. In 2009, off the coast of San Francisco, 17 tagged great whites fled the Farallon Islands within hours because orcas showed up. The orcas were there for less than an hour.

Two male orcas off South Africa have been doing something researchers had never documented in that part of the ocean. Their names are Port and Starboard (named because their dorsal fins flop in opposite directions, like the left and right sides of a ship). Since 2015, dead great white sharks started washing up on South African beaches with a single organ missing. Their livers had been removed with what researchers described as near-surgical cuts through the underside, and everything else was left behind.

A shark’s liver can make up a third of its total body weight. It’s the most calorie-packed organ in the animal. Port and Starboard figured out how to flip a great white upside down, which triggers something called tonic immobility (basically a catatonic state, the shark goes completely limp and can’t fight back), then tear it open and take just the liver. In June 2023, drone footage captured Starboard doing this alone, to a juvenile great white, in under two minutes. That was the first documented case of a single orca taking down a great white alone. Previous hunts involved groups of two to six orcas and took up to two hours.

Before Port and Starboard showed up, False Bay near Cape Town was one of the best-known great white hotspots on the planet. Photographers used to see 250 to 300 great whites a year. By 2020, sightings had dropped to nearly zero. A Monterey Bay Aquarium study published in Nature Scientific Reports tracked 165 tagged great whites and found the same pattern in California. When orcas came within two miles of the Farallon Islands, every single shark left. Seal kills by sharks dropped 62% in those years. One researcher put it simply: “After orcas show up, we don’t see a single shark and there are no more kills.”

And they might be teaching others. In 2022, drone footage showed five orcas working together to kill a great white in the same region, using the same liver-extraction method. Scientists now believe Port and Starboard are passing this technique on. In February 2023, the pair killed 17 sevengill sharks in a single day off Pearly Beach. All 17 had their livers removed the exact same way.

Orcas learn everything from their mothers. Food rules pass down through generations the same way language and traditions do in human families. Port and Starboard are that process happening in real time. Two orcas invented a new hunting method, perfected it, and appear to be spreading it to others. Sharks as a group have been apex predators for hundreds of millions of years, and the great white has no natural predator besides the orca. Its response when an orca shows up is to flee for months. The ocean’s actual apex predator has a blowhole.

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Anish Moonka

@anishmoonka

Apr 12

https://x.com/anishmoonka/status/2043249380594184354

Asha Bhosle was cast out by her own family at 16. She’d eloped with her elder sister Lata Mangeshkar’s secretary, a man twice her age. The marriage turned abusive. She walked out with two children and a third on the way, returning to a family that barely wanted her back.

To survive, she took every recording job the top singers rejected. In Indian cinema, actors don’t sing their own songs. Singers record in a studio, and the actors lip-sync on camera. In the 1950s, the big films went to established voices. Bhosle got the leftovers: B-grade soundtracks, cabaret numbers, songs for the villain’s girlfriend. Between 1948 and 1957, she recorded more songs than any other singer in the country, but almost none of them mattered.

Her break came from composer O.P. Nayyar, who gave her the lead songs in Naya Daur (1957). For the first time, she was the voice of the heroine. By the mid-1960s, she’d partnered with a young composer named R.D. Burman. Their first major collaboration nearly didn’t happen. When Bhosle heard the westernized dance number “Aaja Aaja” for Teesri Manzil (1966), she told Burman she couldn’t sing it. He offered to rewrite the music. She refused, rehearsed for ten days, and delivered one of the decade’s biggest hits. That professional partnership became a marriage in 1980. Burman died in 1994.

In 1981, composer Khayyam asked her to sing two notes lower than usual for the film Umrao Jaan. The ghazals (traditional Urdu love songs) she recorded won her India’s National Film Award and shattered the idea that she could only do pop. At 62, she recorded the Rangeela soundtrack with A.R. Rahman. At 79, she made her debut as a film actress.

Guinness World Records certified her in 2011 as the most recorded artist in music history. She put out over 11,000 songs in more than 20 languages across eight decades, and no other recording artist on Earth has come close.

Her voice crossed borders in ways almost no Indian artist had before. Cornershop wrote “Brimful of Asha” about her in 1997, and a Fatboy Slim remix sent it to No. 1 in the UK. The Black Eyed Peas sampled her vocals. The Kronos Quartet, a classical string ensemble, recorded an album of R.D. Burman compositions with her and earned a Grammy nomination. Earlier this year, at 92, she appeared on a Gorillaz track.

She outlived the people closest to her. Her daughter Varsha died in 2012 at 56. Her son Hemant died of cancer in 2015. Her sister Lata, the most famous singer in Indian history, died in 2022, also at 92. After Varsha’s death, Bhosle told reporters the pain would stay with her until her last breath, but added: “You should always laugh with others but cry alone.”

Asha Bhosle died today in Mumbai at 92. She recorded her first song at 10, her last collaboration at 92, and spent the 82 years in between proving that the woman they once threw out could outlast every voice that came before or after her.

https://x.com/anishmoonka/status/2043249380594184354

If this one earned your attention, following @anishmoonka keeps them coming.

Part 2. A teenage R.D. Burman once heard Asha Bhosle sing on the radio and asked her for an autograph. She described him later as “a slender, pale boy with thick glasses.” He was still in school. She was already raising two kids alone.

Years later, he started sending her flowers anonymously during recording sessions. One afternoon, the bouquet arrived while she was working alongside lyricist Majrooh Sultanpuri. She tossed the flowers and snapped, “Who keeps sending these?” Majrooh pointed at Burman and said: “This is the culprit.” They married years later, over his mother’s fierce objections. He died at 54.

In the 1950s and 60s, the pay gap between the two Mangeshkar sisters told the whole story. Lata charged 500 rupees per song. Asha got 100 to 150 for the same work. Lata chose which films and composers she wanted. Asha took whatever walked through the door. Biographer Raju Bharatan put it bluntly: “In the beginning, Asha Bhosle was no miracle. She was just a struggler.”

One of India’s biggest film composers, Naushad, dismissed her publicly, saying she “lacked something which Lata alone has.” He spent years walking it back. Late in life, he admitted he had been unfair to her.

Bollywood’s most famous dancer, Helen, saw what the composers missed early. Helen would attend Asha’s recording sessions first, listen to how she sang each number, then build her choreography around the vocal performance. The dancer followed the singer.

As children, Lata walked out of school on her first day because the teachers wouldn’t let her bring little Asha into the classroom. Near the end, she told Asha: “Everyone’s gone. Kishore Da, Mukesh ji, Rafi Da. Only two sisters are left.” Same age. Same hospital. Breach Candy, Mumbai.

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Anish Moonka

@anishmoonka

Apr 3

https://x.com/anishmoonka/status/2040094043653194110

Christina Koch was a firefighter at the South Pole at -111°F before she ever applied to be an astronaut. That was maybe the fourth most interesting line on her resume. She grew up in North Carolina, got three degrees from NC State, and her first real job was building deep-space instruments at NASA.

Then she left for Antarctica. Spent three and a half years bouncing between the Arctic and Antarctic as a research scientist, including a full winter at the South Pole base. That means going months without sunlight or fresh food, with a crew of about 50 people and no way out until flights resume. While she was down there, she also joined the glacier search-and-rescue team.

After coming back, she went to Johns Hopkins and built instruments for two NASA missions (one of them is still orbiting Jupiter right now). She figured out how to start a tiny vacuum pump that NASA designed for a future Mars rover. Johns Hopkins nominated it for their Invention of the Year in 2009. Then she went back to the field. More time in Antarctica and a stretch up in Greenland. A government research station in northern Alaska, near the top of the world. Then she ran another one in American Samoa, near the equator.

In 2013, NASA selected her from 6,300 applicants. Eight people got in. Her first space mission was supposed to be a normal rotation on the International Space Station, but NASA extended it. She ended up staying 328 straight days and orbiting Earth 5,248 times, covering about 139 million miles (roughly 291 round trips to the Moon). Up there, she ran over 210 experiments, including tests of cancer drugs in zero gravity and 3D printers that can build structures close to human tissue. Six spacewalks, 42 hours floating outside the station. She learned Russian for the training. She flies supersonic jets.

Right now, Koch is on Artemis II, heading for a flyby behind the far side of the Moon. The crew launched on April 1 and is on track to travel about 252,000 miles from Earth, which would break the all-time human distance record of 248,655 miles set by Apollo 13 in 1970. That record has stood for 56 years, and it was set during a disaster that nearly killed the crew. Fred Haise, one of the Apollo 13 astronauts, is 92 now. He told Koch: "I heard you're going to break our record."

Nobody had left Earth's neighborhood since December 1972. Koch and her three crewmates are the first in 53 years, and they are coming home at about 25,000 mph. That is faster than any crewed spacecraft has ever come back through the atmosphere.

https://x.com/anishmoonka/status/2040094043653194110

I write deep dives like this daily. If this one earned your attention, following @anishmoonka keeps them coming.

Part 2. Christina Koch is 200,000 miles from Earth right now. When she comes back, her spacecraft hits the atmosphere at 25,000 mph, and the outside heats up to 5,000°F, hot enough to melt steel twice over. The heat shield protecting her from all of that came back from its last flight, cracked in over 100 places. NASA kept the same one and changed the flight path instead.

Orion (the capsule they are riding in) flew one test run around the Moon in 2022 with no crew. When it splashed down, engineers found the protective coating on the bottom had broken apart in chunks. It was supposed to burn off slowly and evenly, absorbing heat so the inside stays cool. Instead the material trapped gas, pressure built up, and it cracked. Three of four bolts holding the capsule to the rest of the spacecraft had partially melted through. NASA's own internal watchdog flagged three different ways this could kill a crew.

The agency spent two years investigating, ran over 1,000 simulations, and changed how the capsule comes home. The original plan was to skip it off the atmosphere like a stone on water, bouncing in and out to slow down. That bouncing caused the temperature swings that cracked the coating. So they scrapped the skip. Now it plunges straight in, steeper and faster, spending less time in the heat but putting more force on the crew's bodies. A completely new shield does not fly until 2028.

Four people in 330 cubic feet (two minivans), 10 days. On the space station, astronauts have 4,000 pounds of gym equipment. Koch and her crew have a 30-pound device the size of a carry-on bag that works like a yo-yo, and they do squats and deadlifts on it. The toilet fan jammed on day one (in zero gravity, the fan is what pulls waste into the toilet). Koch flagged it, and Mission Control talked her through the fix. Apollo astronauts didn't even have a toilet, just bags taped to their bodies.

Twenty minutes after the engine fired to send them toward the Moon, a warning popped up: "cabin leak suspected." False alarm. But by that point, turning around was no longer the safer option. Finishing the loop was. On April 6, they fly within about 4,000 miles of the Moon and photograph parts of the far side no human has ever seen up close. Then four days coasting home.

Orion enters the atmosphere at about 25,000 mph, 32 times the speed of sound, faster than any crewed spacecraft has ever returned. Superhot gas wraps around the outside and kills all radio contact for several minutes. Nobody on the ground can reach them. A series of parachutes fire in sequence, and the capsule goes from 25,000 mph to 17 mph before dropping into the Pacific off San Diego. Atmosphere to water, about 20 minutes.

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Anish Moonka

@anishmoonka

Apr 2

https://x.com/anishmoonka/status/2037297234992062692

A newborn sperm whale can’t swim. It starts sinking the second it’s born. If nobody pushes it to the surface, it drowns in mile-deep water.

On July 8, 2023, a sperm whale named Rounder went into labor off the coast of Dominica. Researchers from Project CETI, a $33 million AI initiative out of MIT, Harvard, and Northeastern that’s trying to decode whale language, happened to be there doing routine fieldwork. They had drones in the air and underwater microphones running. What they captured over the next six hours just got published in two papers, one in Science and one in Scientific Reports.

Eleven whales gathered at the surface before Rounder even started delivering. Her mother, Lady Oracle, was there. So was her daughter Accra. Three generations in the water. But the wild part: half those whales belonged to a completely separate bloodline that normally keeps its distance from Rounder’s family. On a typical day, these two family lines split off to hunt in different areas and rarely cluster together. For the birth, they all converged before labor started. The unrelated family somehow knew it was coming.

The delivery took 34 minutes. Sperm whale calves come out tail-first with their flukes still folded from the womb. They haven’t developed the oil-filled organ in their heads that helps adult whales float, so the moment they’re born, they’re dead weight in the ocean. Every adult whale in the group, related and unrelated, started taking turns pushing the calf up to breathe. They kept this rotation going for three hours. When a pod of pilot whales (known to be aggressive toward sperm whales) and a large group of Fraser’s dolphins showed up during delivery, the adults formed a wall around the newborn until the threat passed.

The underwater audio is where it gets interesting. CETI’s microphones picked up the whales changing their vocal patterns during the birth. The click-based sounds they use to talk to each other shifted at specific moments, and vowel-like structures appeared in the recordings. This builds on what CETI found in 2024 when they ran machine learning on over 8,700 recorded whale calls and discovered sperm whale communication isn’t a basic 21-sound code. It’s a system of about 300 distinct sound combinations, with the whales adjusting rhythm and timing in real time, speeding up and slowing down the way a musician does mid-performance. A 2025 follow-up from UC Berkeley found these clicks also contain vowel patterns, something scientists had assumed only humans could produce.

Sperm whales carry the largest brain of any animal on the planet. About 9 kg. Roughly six times heavier than yours. The evolutionary analysis in the new Science paper suggests this kind of cooperative birthing goes back over 36 million years, to the common ancestor of all toothed whales. The calf was spotted a year later, swimming with its family.

https://x.com/anishmoonka/status/2037297234992062692

I write deep dives like this daily. If this one earned your attention, following @anishmoonka keeps them coming.

Sources if you like to go deeper 🧵

1. Science paper (cooperative birth, non-kin assistance) science.org/doi/10.1126/sc…

2. Scientific Reports paper (vocal shifts during birth) nature.com/articles/s4159…

3. NPR (Shane Gero interview, birth details, 3-hour lifting) npr.org/2026/03/27/nx-…

4. Harvard SEAS (Project CETI details, 36M year analysis) seas.harvard.edu/news/studies-d…

5. MIT CSAIL (phonetic alphabet, 8,719 codas, 300 units) news.mit.edu/2024/csail-cet…

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Anish Moonka

@anishmoonka

Apr 1

https://x.com/anishmoonka/status/2039387543544758736

If you're under 53 years old, you have never once been alive while a human was farther than 250 miles from Earth. Tonight, four astronauts are heading 252,000 miles out. That's a thousand times farther than any person has gone in your lifetime.

The 250-mile ceiling is where the International Space Station floats. Every astronaut since December 1972 has been stuck in that zone. Spacewalks, science experiments, cool photos from orbit, sure. But nobody left the neighborhood.

The last crew to go farther was Apollo 17. December 1972. Nixon was president. The internet didn't exist. Cell phones were 11 years away. The youngest member of that crew is now 90 years old.

The farthest any human has ever been from Earth is 248,655 miles. The Apollo 13 crew set that number in 1970, and they didn't mean to. Their oxygen tank blew up, and the emergency route home took them farther out than anyone before or since. Tonight's crew will break that record on purpose.

And the crew itself. Victor Glover becomes the first Black astronaut to leave Earth's neighborhood. Christina Koch becomes the first woman. Jeremy Hansen, a Canadian fighter pilot, becomes the first non-American to do so. When they come home, they'll slam into the atmosphere at 25,000 mph, faster than any human has ever traveled.

The Moon's south pole has ice. Water ice, sitting in craters so deep that sunlight hasn't hit them in billions of years. A 2024 NASA study found way more of it than anyone expected. You can split water into hydrogen and oxygen, which gives you rocket fuel, breathable air, and drinking water, all made on the Moon instead of hauled up from Earth. George Sowers at Colorado School of Mines calculated that Moon-made fuel could shave $12 billion off a single trip to Mars. The Moon is a gas station on the road to Mars.

NASA Administrator Jared Isaacman announced last week a $20 billion plan to build a permanent base at the South Pole over the next seven years, with landings every six months. China is developing its own lunar lander and spacesuit, aiming for a crewed landing by 2030. The Artemis program has burned through $93 billion so far, and the first actual surface landing is penciled in for 2028. There's a real question of who gets there first this time around.

Harrison Schmitt walked on the Moon in December 1972 as part of Apollo 17. He's 90. Asked about it this week, he sounded pretty relaxed. "Mars is attainable," he said. "We're humans. That's what we've always done."

https://x.com/anishmoonka/status/2039387543544758736

Godspeed.

I write deep dives like this daily. If this one earned your attention, following @anishmoonka keeps them coming.

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