B2 High-Intermediate 37 Folder Collection
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We like to think we're in control … that our minds are our own.
But that's not true for this fruit fly.
Its brain has been hijacked by another organism and it's not going to end well.
It all starts when the fly is innocently walking around, sipping on overripe fruit.
It picks up an invisible fungus spore, which bores under its skin.
For a few days, everything seems normal.
But inside, the fungus is growing, feeding on the fly's fat … and infiltrating its
At dusk on the fourth or fifth day, the fly gets a little erratic, wandering around.
It climbs to a high place.
Scientists call this behavior “summiting.”
Then it starts twitching.
The fungus is in control.
The fly sticks out its mouthpart and spits out a tiny drop of sticky liquid.
That glues the fly down, sealing its fate.
A few minutes later, its wings shoot up.
And it dies.
Now that the fungus has forced the fly into this death pose … wings out of the way … nothing
can stop it.
It emerges.
Tiny spore launchers burst out of the fly's skin.
Hundreds of spores shoot out at high speed, catching a breeze if the fly climbed high
They're the next generation of killer fungus.
It continues for hours, spores flying out.
These flies are in the wrong place at the wrong time.
And if spores land on a wing, which they can't bore into, they shoot out a secondary spore
to increase their chances of spreading.
So how does a fungus take control of a brain?
At Harvard, Carolyn Elya is trying to understand that.
She thinks the fungus secretes chemicals to manipulate the fly's neurons, maybe stimulating
the ones that make flies climb.
But don't worry: The fungus can't hurt humans.
Scientists have tried to harness its power for our benefit, to kill flies in our kitchens
and farms.
They haven't had any luck though.
The deadly spores are actually pretty fragile and short-lived.
It turns out, this lethal puppet master does only what it needs to for its *own* survival.
Hi, it's Lauren again.
If you love Deep Look, why not help us grow on Patreon?
We're raising funds to go on a filming expedition to Oaxaca, Mexico.
And for a limited time, we're sweetening the deal with a special gift.
Link is in the description.
And if you're craving more spooky videos, here's a playlist of our scariest episodes.
Don't watch 'em after midnight.
See you soon.
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This Killer Fungus Turns Flies into Zombies | Deep Look

37 Folder Collection
林宜悉 published on November 22, 2019
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