Name: 【TED】Tristram Wyatt: The smelly mystery of the human pheromone (The smelly mystery of the human pheromone | Tristram Wyatt)
Uploaded: 2014-12-16T05:42:12.000Z
Duration: 14 min 55 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Adverbs of degree

It conjures up sex, abandon, loss of control,

and you can see, it's very important as a word.

But it's only 50 years old. It was invented in 1959.

and almost all of those sites are trying to sell you

It's things like androstenol, androstenone

and when you combine that with white lab coats,

The problem is that, although there are many

good scientists working on what they think

and they're publishing in respectable journals,

there really is no good science behind it,

which is nobody has systematically gone through

and there are thousands of
molecules that we give off.

We're mammals. We produce a lot of smell.

to work out which molecules really are pheromones.

and all these experiments are based on those,

It is, and some people are real enthusiasts,

he wrote to his lover, Empress Josephine,

So he didn't want to lose any of her richness

and perfumes are a multi-billion-dollar business.

So what I want to do in the rest of this talk

is tell you about what pheromones really are,

tell you about some of the
confusions in pheromones,

that dogs sent invisible signals between each other.

You could take the smell from the female dog,

was that you couldn't identify the molecules.

You couldn't demonstrate it was chemical.

males dogs can smell it, but we can't smell it.

And it was only in 1959 that a German team,

after spending 20 years in
search of these molecules,

discovered, identified, the first pheromone,

and this was the sex pheromone of a silk moth.

Now, this was an inspired choice 
by Adolf Butenandt and his team,

to get enough material to do the chemical analysis.

for how you should go about pheromone analysis.

He basically went through systematically,

showing that only the molecule in question

and then tried the synthesized
molecule on the males

and got them to respond and showed it was,

Subtitles ListPlay Video

【TED】Tristram Wyatt: The smelly mystery of the human pheromone (The smelly mystery of the human pheromone | Tristram Wyatt)

brain

good

simply

molecule