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Google is UNLEASHING 32 MILLION Mosquitoes in California and Florida - Video học tiếng Anh
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Google is UNLEASHING 32 MILLION Mosquitoes in California and Florida
Google is UNLEASHING 32 MILLION Mosquitoes in California and Florida
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0:00
Every summer, fleets of trucks cover American neighborhoods with chemical fog to protect against
0:05
the deadliest animal on Earth. But it’s stopped working.
0:09
Mosquitoes are evolving. They’re resisting. Now diseases like West Nile Virus are coming back.
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The era of chemical pest control is over and it’s time for something drastic.
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Google wants to release up to 32 million mosquitoes, on purpose, into neighborhoods
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across Florida and California. Not to spread disease.
0:29
To end it. CHAPTER ONE — The Deadliest Animal
0:29
The mosquito earns its title as the world’s deadliest animal and its body count is impressive.
0:35
The diseases mosquitoes carry are estimated to cause as many as 830,000 deaths each year.
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That’s more than the next top three killers combined: humans at 430,000,
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snails at 200,000, and snakes at 138,000. In the United States, the most common
0:54
mosquito-borne disease is West Nile virus. In 2025, the country recorded more than 2,100 cases
1:01
and 172 deaths. There is no vaccine for it. There is no specific treatment. There is only
1:07
prevention, and prevention means the fog truck. But those numbers don’t tell the full story.
1:13
Most infections never cause symptoms, never get tested, and never make it into official
1:17
statistics. What we see is only the visible tip of a much larger outbreak
1:22
moving through the population every summer. West Nile is carried by one branch of the
1:26
mosquito family, the Culex. The insect Google is actually going after is a different one,
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and in global terms, far more dangerous. Its name is Aedes aegypti.
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This is the mosquito that carries dengue, Zika, chikungunya, and yellow fever. It is small,
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aggressive, bites during the day, and has adapted almost perfectly to living alongside humans.
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It can breed in something as small as a bottle cap of water inside your home. More than 2
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billion people on Earth now live at risk of the viruses it spreads, and its range is expanding.
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It’s pushing into California and entrenching across Florida.
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It’s almost the ultimate enemy. It doesn’t need a swamp or a marsh to procreate. A
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discarded tire, a clogged gutter, the saucer under a potted plant, a child’s toy left out in the rain
2:13
are enough to make it lay eggs. Anywhere a tablespoon of water can sit for a few days,
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Aedes aegypti can turn it into a nursery. You can’t drain its breeding sites,
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because its breeding sites are everywhere you live. It evolved alongside human beings,
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and it treats our cities as its natural habitat. The diseases it carries are just as bad as West
2:31
Nile, at least on a global scale. Dengue alone is estimated to cause between 100 to 400 million
2:37
infections each year. Symptoms range from flu-like illness to severe hemorrhagic disease that kills
2:43
over 10,000 people annually. Zika can pass from a pregnant woman to her child and damage the
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developing brain. Chikungunya leaves survivors with joint pain that can linger for months.
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This is what a single insect delivers. One bite at a time.
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So when Google says it wants to release 32 million mosquitoes into those 2 states,
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understand what is really being said. They are not introducing a new threat.
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They are targeting one that is already here, already spreading, and already winning.
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They are doing it because the old way of fighting back has stopped working.
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No amount of fog trucks are going to save us. CHAPTER TWO — The Pesticide Paradox
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For most of the last century, the strategy against the mosquito was brute force.
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If the insect is the enemy, poison the air it flies through. Spray the neighborhoods,
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fog the wetlands, coat the standing water. For a while, this worked.
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Then the mosquitoes began to change. When you spray a population with a chemical,
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you don’t really kill them all. You just kill the weak.
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The few that happen to carry a genetic quirk survive.
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Those survivors then breed, and their offspring inherit the quirk. Spray again,
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and you create an even stronger breed. Within a handful of seasons, you are no longer poisoning
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a vulnerable population. You’re evolving it.
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This is not a theory. Back in 2018, researchers in Florida tested wild
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Aedes aegypti against permethrin, the workhorse of pesticide sprays. Every
4:04
single population they examined was resistant. The most stubborn populations had become up
4:09
to 61 times harder to kill than a mosquito with no resistance to the chemical at all.
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They genotyped nearly 5,000 mosquitoes from more than 200 locations across Florida
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and what they found was alarming. One of the key mutations behind insecticide resistance had
4:25
already spread across almost the entire state. But the real shock came from the control group.
4:31
A competing mosquito species breeding in the exact same containers showed almost no
4:36
resistance at all.The chemicals still worked. Just not on the mosquito that mattered most.
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But there’s another problem with the fog method. It doesn’t stay where it is aimed. It drifts. It
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settles in gardens, vegetable plots, flowering plants that feed pollinators, and into bee hives.
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A tool designed to kill an insect doesn’t tell the difference between a bee and a mosquito.
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Instead, the bees that don’t have resistance can die, while mosquitoes need more and more
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of it to be culled in meaningful numbers. The strategy was failing twice over.
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It was becoming less effective against the target with every passing season. It was
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never precise enough to spare everything else. You were paying more, spraying more, and getting less,
5:16
while the collateral damage stayed the same. So, what do you do when the thing you are
5:21
fighting evolves faster than you can invent new ways to kill it?
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Google’s answer was to stop fighting biology with chemistry and start fighting biology with biology.
5:31
CHAPTER THREE — The Digital Sniper To understand the solution,
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you have to understand something that’s practically unique to the mosquito.
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Only the female mosquito bites, since she needs the protein found in blood to produce eggs.
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The male never bites at all. He feeds on nectar, lives a short life,
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and his only role is to mate with the female. This is what the entire plan is built on.
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Flood a neighborhood with male mosquitoes that look and behave exactly like the locals
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but can't produce viable offspring. The population collapses from the inside.
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Allow without a single drop of poison. There was only ever one problem.
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To release males, you first have to separate them from females,
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by the millions, with almost no mistakes. Let too many biting females slip into the batch,
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and you’re not suppressing the problem but express shipping it to people’s doorsteps.
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For most of the history of this idea, sorting mosquitoes by sex
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was painstaking manual work, and that kept the whole approach small, slow, and local.
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This is where Google has an advantage. Verily, Google's life sciences division,
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and a project called Debug attacked the problem the way Silicon Valley attacks everything…
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With automation. Mosquitoes are raised in
6:40
tightly controlled facilities, then passed through computer vision systems similar to the technology
6:45
that recognizes faces in photos. The machines identify each insect as male or female and
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sort them automatically. The process looks less like a laboratory and more like a factory line.
6:56
The insects move in a single file past optical sensors. In a fraction of a second,
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the system reads the physical signatures that distinguish a male from a female.
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It spots the subtleties that a human technician would struggle to catch by eye over a long shift,
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and makes the call. Males continue down the line toward release. Females are diverted out.
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It runs continuously, at a pace no room full of people with microscopes could ever match.
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Because getting it wrong isn't an option. So how much better are the machines?
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One automated system can sort 150,000 mosquito pupae every hour while maintaining a claimed
7:29
accuracy of 99.7%. To match that output, two human workers would need more than an entire week. In
7:36
one Spanish mosquito-control project, two workers manually sorted about 240,000 mosquitoes over a
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full workweek with an accuracy of roughly 99%. The scale difference is staggering.
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What once took days now takes hours. The mosquito has spent millions of years
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perfecting evasion. Now it has an opponent that doesn’t get tired and improves every time it runs.
7:58
CHAPTER FOUR — The Wolbachia Weapon Google's plan involves releasing millions
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of infected mosquitoes. That word makes the idea sound far more terrifying than it actually is.
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There is no genetically modified bug. No lab-built DNA. No science-fiction splice.
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The weapon is a bacterium called Wolbachia, and it is one of the most common microbes on
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the planet. It already lives naturally inside a huge fraction of the world’s insects. Google’s
8:22
males simply carry a strain of it, and that is enough to break the species’ ability to reproduce.
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The mechanism behind this strategy is called cytoplasmic incompatibility.
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Males carrying a Wolbachia strain can mate normally, but if the female doesn’t have
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a matching strain, the embryo fails immediately. Fertilized eggs are produced, but nothing hatches.
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And because mosquitoes live short lives, overwhelming a population with these males
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means most females will lay eggs that go nowhere.
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Wolbachia isn’t a single uniform organism, it’s a single, but highly diverse, group of strains.
8:55
And different strains can affect closely related mosquito species in different ways.
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That means the system can be rotated. In one season, you introduce one strain.
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In the next, you switch to another, continuing the cycle of incompatibility and suppression.
9:09
If the idea of sterilizing a pest into collapse sounds far-fetched, it has in fact already
9:14
saved North America from one of the most gruesome livestock plagues in its history. Decades ago, the
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United States faced the screwworm, a flesh-eating fly whose larvae burrowed into living animals.
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So scientists reared the flies, sterilized the males, and released them by the billions.
9:30
Wild females mated with sterile males, produced no offspring,
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and the population was driven out of the country. The difference between that method and Google’s is
9:39
that Wolbachia adds reach. Because the bacterium occurs naturally in so many insects already,
9:44
it offers a way to achieve that same reproductive sabotage without irradiating the mosquitoes
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or engineering their genes. It’s borrowing a tool the natural world had already built
9:54
and pointing it at a single species. And this particular version of the
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idea has a history with a fitting twist. The first time cytoplasmic incompatibility
10:03
was used to wipe out a wild mosquito population, it wasn’t even on Aedes mosquitoes. Back in 1967,
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in what is now Myanmar, geneticist Hannes Laven used males from Culex pipiens fatigans, a close
10:16
relative of the West Nile mosquito. The result was a total collapse of the local population.
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And at the time, scientists didn’t even know the bacterium behind it was responsible.
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The same idea now being used against dengue mosquitoes was proven decades ago
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on a close relative of the West Nile carrier. There’s another aspect of the Wolbachia weapon
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that’s important here: the bacteria make the mosquito less able to spread viruses.
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Some studies suggest that certain Wolbachia strains inhibit a virus from transferring to
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and from the mosquitoes. The research suggests newly-infected mosquitoes are
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less likely to be able to spread diseases. This last point gives another failsafe.
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Simply introducing Wolbachia into a mosquito population can have another effect.
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Even if females carry it and avoid cytoplasmic incompatibility, they may become less able to
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transmit deadly viruses to humans It sounds flawless on paper.
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But the real test was always going to be what happens when you open the box
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in an actual American town. CHAPTER FIVE — The Fresno Proof
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Beginning in 2017 and expanding through 2018, the Debug team ran what was then the
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largest study of its kind in the United States. Sterile Wolbachia-carrying male
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Aedes aegypti were released across suburban neighborhoods in Fresno County, California.
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They were then compared against similar neighborhoods where nothing was released.
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By peak mosquito season, the treated neighborhoods saw a reduction of more
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than 95% in the number of biting female mosquitoes compared to the untreated areas.
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For every 20 biting females that should have been there… 19 were gone.
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In 2020, those results were published in the journal Nature Biotechnology,
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which meant the wider scientific community and regulators could pull the methods apart and check
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them line by line. The team even released its raw field data so the analysis could be replicated.
12:00
This was no longer a press release, but evidence. The study had limits, however.
12:05
The reason suppression didn’t reach one hundred percent is that biting females can wander in from
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neighboring areas that were never treated. But that just means the technique worked so well
12:15
inside its borders that its main remaining enemy was geography. As such, if you treat a bigger
12:21
area, the effect would only get stronger. Fresno wasn’t the only proving ground.
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The same Verily-built technology has been deployed in Singapore’s national Project Wolbachia.
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The city-state has been fighting back against dengue with repeated releases of sterile males.
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In far north Queensland, Australia, more than a million sterile males were released
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in partnership with the country’s national science agency and local universities.
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The same underlying system has proved effective in different continents and different climates.
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There is a detail from those early Fresno trials worth holding onto,
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because it cuts against the instinctive fear of increasing the threat. Residents were shown
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demonstration boxes of the males being released, and invited to let them land on bare skin.
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Nobody got bitten because male mosquitoes physically can’t bite.
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The insects being set loose by the millions are, to a human being, completely harmless.
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The only thing that fears them… is a female mosquito looking for a mate.
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Google’s plans for Florida and California in 2026, are not about whether the plan works.
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But how to do it at the scale of an entire state. CHAPTER SIX — The Red Queen’s Race
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There is an idea in evolutionary biology called the Red Queen’s hypothesis. It describes an arms
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race with no finish line, where every advance by one side is answered by the other, forever.
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For evolutionary biology, the concept applies to species adapting to their environment and
13:40
being able to simply exist. The same concept has even been referred to in agriculture,
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where it’s been used to describe how crops need to be modified to endure climate change.
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But that is exactly what chemical pest control became.
13:53
Every new pesticide purchased is good for a few years, then selected for the survivors who
13:58
could shrug it off. Those survivors rebuild the population stronger than before. We were running
14:03
as hard as we could, inventing new poisons, and the mosquito was running just as hard to survive.
14:09
The reason the Wolbachia approach is different is that it changes the playbook.
14:12
A chemical attacks the mosquito from the outside,
14:15
and the mosquito adapts. Wolbachia attacks it from the inside,
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through the one thing the mosquito can’t stop doing if it wants to exist at all: reproducing.
14:24
There’s an elegant cruelty about it. And if it works at scale, it changes
14:28
not only how we deal with mosquitoes, but how we think about managing the living world around us.
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Which is also exactly why the final step is the hardest one.
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CHAPTER SEVEN — The End of the Fog As of June 2026, Google doesn’t yet
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have the green light. What it has is an application and a process.
14:43
This is the moment it stops being about laboratories and field data and becomes
14:47
about permission. A technique can be brilliant, peer-reviewed, and proven across 3 continents,
14:52
and still, it does not get to touch an American neighborhood until a regulator signs off.
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That gatekeeping is what this story is actually all about.
15:01
A notice in the Federal Register laid out the plan. In the first year, up to 16 million
15:05
mosquitoes would be released in Florida. In the second year, another 16 million in California.
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32 million mosquitoes in total. It’s worth noting that this is a phased rollout across two seasons,
15:16
not a single mass release into both states at once.
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But that matter is now open to the public. Anyone can read it and submit comments through
15:23
the EPA’s federal rulemaking portal under a specific docket number assigned to the
15:27
project. This is how decisions like this are actually made. Not in a boardroom,
15:31
but in public view, where regulators weigh the science and safety before anything is released.
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And there’s another side to the Red Queen’s race: whether this technology works in your
15:40
country depends less on the science than on your wealth, your climate, and your government.
15:46
Start with the fact that the world has already split into two camps.
15:49
One approach releases both male and female mosquitoes carrying Wolbachia.
15:53
The bacteria spreads on its own, and over time the protection becomes self-sustaining,
15:57
gradually reducing mosquito populations. More than a dozen countries have taken this path.
16:02
The other approach, used by places like the United States, Singapore, and China,
16:06
releases only sterile males. It suppresses populations through brute reproductive disruption.
16:11
But the effect is not self-sustaining. That is the path Google is on, and one
16:15
that is arguably more expensive, because a suppression program is never finished.
16:20
You need to keep manufacturing and releasing males, season after season,
16:23
so you stop the mosquitoes from reproducing. In Singapore, that meant roughly 2 to 5 million
16:28
male mosquitoes released every single week, delivered to treatment sites twice
16:33
a week. In some cases, they were carried up to different floors of high-rise apartment blocks.
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It’s basically a permanent subscription to mosquitoes, which the government has to pay for.
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So high-income places like Singapore or American states can afford the continuous male-release
16:47
method. But in megacities where both the mosquito populations and the human populations are larger,
16:52
the same approach becomes far harder and more expensive to sustain.
16:56
Then there is the climate trap. Sustained high temperatures can thin
17:00
out the bacteria inside the insect, weaken the reproductive block, and blunt the very
17:04
virus-fighting effect the whole strategy depends on. In other words, the tool tends to be weakest
17:09
in the hottest places. These are exactly the tropical heartlands where dengue does its worst
17:14
work. Brazil alone accounted for half of the world’s reports of dengue. All this means there
17:20
is no single recipe that can simply be copied from a temperate suburb to an equatorial slum.
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And even when the money and the climate cooperate, there is the human bureaucracy.
17:30
Health officials in many countries have never encountered anything like this.
17:34
The idea of deliberately releasing mosquitoes, some of which can bite,
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sits uneasily against a century of being told the only good mosquito is a dead one. Many governments
17:43
have no regulatory pathway to even import the insects, and the 4 to 5 year rhythm of elections
17:48
makes it hard to commit to an expensive program that might take years to show a visible result.
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A technology can be proven, and still stall in a committee room.
17:57
So the race does not actually end with Wolbachia. If approved, Google’s million mosquitoes will be
18:01
released into two of the wealthiest states on Earth, with the laboratories, the money, and
18:06
the regulators to make it work. Then, it’s likely that there’s going to be another project for more
18:10
mosquitoes targeting the same or even different states. Whether the same trick can ever reach the
18:15
places that bury the most children is a different race entirely, and a far less certain one.
18:20
But you have to picture the endgame the company is selling, a summer where the fog truck never comes,
18:26
because there is nothing left for it to do. That ambition also can’t just stop
18:30
at the dengue mosquito. The deadliest mosquito-borne
18:33
disease in America is still West Nile, carried by the Culex. Researchers have spent years working
18:38
to turn this same principle back against it. There is a real obstacle in the way.
18:43
Unlike the Aedes mosquitoes Verily releases, Culex mosquitoes already carry Wolbachia naturally,
18:49
so you can’t simply add it. You have to import an incompatible strain to trigger the same
18:53
reproductive collapse. In the lab, the process is simple. Whether it can be scaled to an entire
18:58
American summer the way the Aedes program has is a question for the next decade, not this one.
19:04
That is the larger gamble hiding behind a story about 32 million insects.
19:09
Google’s release is aimed at dengue, Zika, and chikungunya. Nothing here should be
19:13
mistaken for a West Nile cure. But if the approach works at the scale of a state,
19:18
it becomes a proof of concept for a much longer campaign against the entire family of mosquitoes.
19:23
It’s a genuinely radical vision and it deserves both hope and scrutiny.
19:27
Because it might be the only solution. The trucks are already failing. The chemicals
19:31
are already losing. And for the first time in a century, the alternative isn’t a stronger poison.
19:37
It’s millions of mosquitoes, sorted by machine, carrying an ancient bacterium,
19:42
ready to be released against the insect that has outlasted everything we’ve thrown at it.
19:47
And it’s being tested in your backyard. And if all of this makes you wonder how
19:51
mosquitoes pick the same unsuspecting victims over and over again,
19:54
you’re not alone. Watch “Scientists Finally Know Why Mosquitoes Bite Some People More
19:58
Than Others - Mystery Revealed” to find out. Or click on this video.
