Name: Are trees intelligent? 6 Minute English
Uploaded: 2020-12-17T20:30:49.000Z
Duration: 6 min 17 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...

Hello. This is 6 Minute English from BBC Learning English. I'm Neil.

How did you spend your free time during the weeks

of lockdown, Georgina? Repainting the living room?

Or doing exercise classes in the kitchen?

Actually, Neil, I've been doing some online research

I'm investigating my family tree – you know,

a drawing showing all the relationships between the

And how appropriate - because trees are the subject of this programme –

not family trees but real, living-in-the-forest trees.

Well, Neil, this might surprise you but according to some people,

There are mother trees who support and help feed child trees.

That's right. According to Suzanne Simard,

one of the world's leading tree researchers,

They communicate with each other. They help each other.

And as you mentioned, Georgina, they can even tell their family members.

So a tree can have its own family tree – amazing! Tell me more.

OK, Georgina, but first let me ask you my quiz question.

The largest trees in a wood or forest are called 'mother trees'.

As they're the biggest, mother trees usually have the longest,

So my question is this – what is the world's largest currently living tree?

Is it: a) a baobab tree?, b) a giant redwood tree?,

Hmmm… I've seen photos of redwood trees in California and

they're huge, so I'll say b) a giant redwood.

OK Georgina, I'm sure you only chose that cause it's

the easiest one to pronounce but we'll find out the answer at

Now let's get back to that tree researcher, Suzanne Simard.

a way of describing the network of underground roots

linking trees to other trees of the same family.

Here's Suzanne explaining more about tree families

to BBC World Service programme, The Big Idea:

We found that the parent trees would favour

those seedlings that were of their own kin versus the strangers.

That's extraordinary – and when you say they favour their own

family members, you mean they'll send more nutrients to

their offspring than they would to, as it were, a stranger tree?

Mother trees send food and nutrients to their own seedlings –

young plants that have been grown from a seed.

In this way, parent trees help their offspring –

another word for their children, or young.

Mother trees can recognise and feed other trees of their own kin –

With the extra nutrients and carbon they receive,

the offspring can extend their own root network

…which in turn increases their own growth,

turning some of them into the giants we see growing in

Amazing! With trees behaving in clever ways like this

it's no wonder Suzanne thinks they have intelligence.

Listen again as Suzanne discusses the question of

whether trees are 'alive' with BBC World Service's, The Big Idea.

Alive in the sense of having agency in their destinies,

instead of being you know… I think a lot of people think of trees as

just sort of like these sticks that grow out of the ground,

they're kind of these inert things that don't have agency in their destiny,

that they don't change behaviours and make decisions

but what we're finding is that they do all that.

And you know what step back and think trees have evolved over

a long long long time, way longer than human beings and they've evolved

in communities and they have to grow and survive.

I think Suzanne believes trees are alive and intelligent,

a concept meaning having the ability to act and effect your environment.

Dying trees even seem to know the future – before they die,

they warn their offspring to start making new root connections.

Showing that trees have some understanding of their destiny –

everything that happens in someone's life and what will happen in the future.

So it seems that trees are much more intelligent

It's certainly going to change how I feel about going for a walk

in the woods, surrounded by all those intelligent trees

Ha. Well, I wouldn't argue with one of those really gigantic trees,

Ah, you mean your quiz question - about the largest living tree?

I said the largest currently living tree was,

Well, you got the 'giant' part right, Georgina,

but in fact the answer was c) a giant sequoia named General Sherman.

he's a whopping 83 metres tall and measures a massive

Wow! And I bet he has a huge family tree!

Ha-ha. Right then, Georgina, let's recap the vocabulary we've

used discussing intelligent trees, starting with family tree –