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How I learned to follow the Yellow Brick Road | Liam Donohoe | TEDxDublinInstituteofTechnology


so imagine a world where you can grow

so imagine a world where you can grow your own home now some of you might be

your own home now some of you might be

your own home now some of you might be familiar with the work that’s been done

familiar with the work that’s been done

familiar with the work that’s been done in the laboratory in the Netherlands

in the laboratory in the Netherlands

in the laboratory in the Netherlands where they’re growing what they call

where they’re growing what they call

where they’re growing what they call cultured meat or you might also be aware

cultured meat or you might also be aware

cultured meat or you might also be aware of the little bit of work that they’re

of the little bit of work that they’re

of the little bit of work that they’re doing there on insect burgers mmm

doing there on insect burgers mmm

doing there on insect burgers mmm but did you know that you can apply that

but did you know that you can apply that

but did you know that you can apply that principle to the homes and the buildings

principle to the homes and the buildings

principle to the homes and the buildings that we live in with this brick I bet

that we live in with this brick I bet

that we live in with this brick I bet you didn’t now what I want to say to you

you didn’t now what I want to say to you

you didn’t now what I want to say to you is we’re living in a time of increased

is we’re living in a time of increased

is we’re living in a time of increased challenges we have a population that is

challenges we have a population that is

challenges we have a population that is growing at an enormous rate believe it

growing at an enormous rate believe it

growing at an enormous rate believe it or not we have unprecedented wealth in

or not we have unprecedented wealth in

or not we have unprecedented wealth in the world on a global scale and the UN

the world on a global scale and the UN

the world on a global scale and the UN says that maybe in 150 years time we

says that maybe in 150 years time we

says that maybe in 150 years time we could have 125 times the population we

could have 125 times the population we

could have 125 times the population we currently have now just think about that

currently have now just think about that

currently have now just think about that we’re not very good at the moment US

we’re not very good at the moment US

we’re not very good at the moment US housing the people that we already have

housing the people that we already have

housing the people that we already have mean I was walking in this morning and

mean I was walking in this morning and

mean I was walking in this morning and we were coming up by the canal there was

we were coming up by the canal there was

we were coming up by the canal there was people there living in a tent I mean

people there living in a tent I mean

people there living in a tent I mean this is the 21st century and we’re a

this is the 21st century and we’re a

this is the 21st century and we’re a so-called advanced country here so

so-called advanced country here so

so-called advanced country here so trying to face this challenge is quite a

trying to face this challenge is quite a

trying to face this challenge is quite a big one

big one

big one and there are a couple of different

and there are a couple of different

and there are a couple of different schools of thought on this some people

schools of thought on this some people

schools of thought on this some people say that over time man will innovate he

say that over time man will innovate he

say that over time man will innovate he always innovate to solve whatever

always innovate to solve whatever

always innovate to solve whatever problem he faces and solved them with

problem he faces and solved them with

problem he faces and solved them with technology other people say no we’ve got

technology other people say no we’ve got

technology other people say no we’ve got to tighten our belts we’ve got to cut

to tighten our belts we’ve got to cut

to tighten our belts we’ve got to cut back I say that we can do both and we

back I say that we can do both and we

back I say that we can do both and we can do both with this brick now you may

can do both with this brick now you may

can do both with this brick now you may have remembered these incredible scenes

have remembered these incredible scenes

have remembered these incredible scenes from a couple of months ago in London

from a couple of months ago in London

from a couple of months ago in London when that Terra block went on fire and

when that Terra block went on fire and

when that Terra block went on fire and what some of you obviously I’m a

what some of you obviously I’m a

what some of you obviously I’m a building physics narrator I kind of know

building physics narrator I kind of know

building physics narrator I kind of know about this but what some of you

about this but what some of you

about this but what some of you realizes that one of the reasons why

realizes that one of the reasons why

realizes that one of the reasons why that fire was so bad why it spread so

that fire was so bad why it spread so

that fire was so bad why it spread so rapidly was because insulation had been

rapidly was because insulation had been

rapidly was because insulation had been put on the building and it hadn’t been

put on the building and it hadn’t been

put on the building and it hadn’t been thought through properly and it allowed

thought through properly and it allowed

thought through properly and it allowed the fire to spread so actually a project

the fire to spread so actually a project

the fire to spread so actually a project that was meant to improve the lives of

that was meant to improve the lives of

that was meant to improve the lives of people turned out to be a bit of a

people turned out to be a bit of a

people turned out to be a bit of a disaster in some respects so that’s the

disaster in some respects so that’s the

disaster in some respects so that’s the scale of the challenge that we’re facing

scale of the challenge that we’re facing

scale of the challenge that we’re facing we have increased population we have

we have increased population we have

we have increased population we have also a demand for increased standards we

also a demand for increased standards we

also a demand for increased standards we want better homes we want more

want better homes we want more

want better homes we want more energy-efficient homes we want more

energy-efficient homes we want more

energy-efficient homes we want more comfort everybody all over the world

comfort everybody all over the world

comfort everybody all over the world wants that and some people think that

wants that and some people think that

wants that and some people think that this is the solution a plastic wendy

this is the solution a plastic wendy

this is the solution a plastic wendy house okay so i am exaggerating a little

house okay so i am exaggerating a little

house okay so i am exaggerating a little bit

bit

bit I mean Wendy might insulate her house

I mean Wendy might insulate her house

I mean Wendy might insulate her house not quite as well as what engineers are

not quite as well as what engineers are

not quite as well as what engineers are proposing now but I am serious one of

proposing now but I am serious one of

proposing now but I am serious one of the main things we have in Europe now is

the main things we have in Europe now is

the main things we have in Europe now is a standard it’s a law actually it’s

a standard it’s a law actually it’s

a standard it’s a law actually it’s called the energy performance and

called the energy performance and

called the energy performance and buildings directive and what it says is

buildings directive and what it says is

buildings directive and what it says is that every country must set a minimum

that every country must set a minimum

that every country must set a minimum standard of energy performance for every

standard of energy performance for every

standard of energy performance for every new building and you have to realise

new building and you have to realise

new building and you have to realise that those standards are very very

that those standards are very very

that those standards are very very demanding and a lot of people think that

demanding and a lot of people think that

demanding and a lot of people think that building what’s called a passive house

building what’s called a passive house

building what’s called a passive house is the way to do it and it’s a brilliant

is the way to do it and it’s a brilliant

is the way to do it and it’s a brilliant design there’s no doubt about it

design there’s no doubt about it

design there’s no doubt about it it’s a concept where a series of

it’s a concept where a series of

it’s a concept where a series of equations works out what the energy

equations works out what the energy

equations works out what the energy demand of your home is and you’ve got to

demand of your home is and you’ve got to

demand of your home is and you’ve got to figure out how to make your home to that

figure out how to make your home to that

figure out how to make your home to that series of equations

series of equations

series of equations however things can go wrong

however things can go wrong

however things can go wrong because now what you’re doing is you’re

because now what you’re doing is you’re

because now what you’re doing is you’re literally wrapping your home in a

literally wrapping your home in a

literally wrapping your home in a plastic bag and we all know that if you

plastic bag and we all know that if you

plastic bag and we all know that if you do that and you don’t ventilate it

do that and you don’t ventilate it

do that and you don’t ventilate it properly then you get magic mushrooms

properly then you get magic mushrooms

properly then you get magic mushrooms okay try it sometime trust me

okay try it sometime trust me

okay try it sometime trust me so I want to talk to you a little bit

so I want to talk to you a little bit

so I want to talk to you a little bit about hem crease and why I think it

about hem crease and why I think it

about hem crease and why I think it could be the solution so first of all

could be the solution so first of all

could be the solution so first of all I’m going to tell you a little bit about

I’m going to tell you a little bit about

I’m going to tell you a little bit about it it’s a material that is made from the

it it’s a material that is made from the

it it’s a material that is made from the inner core which is also called a shiv

inner core which is also called a shiv

inner core which is also called a shiv of the hemp plant and it’s the

of the hemp plant and it’s the

of the hemp plant and it’s the industrial hemp variety not the other

industrial hemp variety not the other

industrial hemp variety not the other stuff it does look kind of the same all

stuff it does look kind of the same all

stuff it does look kind of the same all right I’ll give you that and for years

right I’ll give you that and for years

right I’ll give you that and for years people in the plastics industry were

people in the plastics industry were

people in the plastics industry were able to get the cultivation of this very

able to get the cultivation of this very

able to get the cultivation of this very severely restricted in the USA but it’s

severely restricted in the USA but it’s

severely restricted in the USA but it’s making a huge comeback and I’ll tell you

making a huge comeback and I’ll tell you

making a huge comeback and I’ll tell you a little bit more about that presently

a little bit more about that presently

a little bit more about that presently but first I want to tell you that homes

but first I want to tell you that homes

but first I want to tell you that homes that are built using natural materials

that are built using natural materials

that are built using natural materials like this cave home here in Spain keeps

like this cave home here in Spain keeps

like this cave home here in Spain keeps you cool inside even when it’s 40

you cool inside even when it’s 40

you cool inside even when it’s 40 degrees outside or maybe this home here

degrees outside or maybe this home here

degrees outside or maybe this home here in Germany’s type of a passive house it

in Germany’s type of a passive house it

in Germany’s type of a passive house it has lots of windows and the bricks were

has lots of windows and the bricks were

has lots of windows and the bricks were made locally right this type of science

made locally right this type of science

made locally right this type of science is how we always used to build for

is how we always used to build for

is how we always used to build for example this is my grandfather’s home I

example this is my grandfather’s home I

example this is my grandfather’s home I visited there about two or three weeks

visited there about two or three weeks

visited there about two or three weeks ago I was amazed to find that it was an

ago I was amazed to find that it was an

ago I was amazed to find that it was an earth house I mean it that never

earth house I mean it that never

earth house I mean it that never occurred to me before of course it was

occurred to me before of course it was

occurred to me before of course it was it was built maybe 150 years ago and

it was built maybe 150 years ago and

it was built maybe 150 years ago and it’s still standing and it’s still as

it’s still standing and it’s still as

it’s still standing and it’s still as dry as a bone

dry as a bone

dry as a bone so what are the advantages of this well

so what are the advantages of this well

so what are the advantages of this well number one it’s completely sustainable

number one it’s completely sustainable

number one it’s completely sustainable you can literally grow it in your garden

you can literally grow it in your garden

you can literally grow it in your garden and it’s one of the fastest growing

and it’s one of the fastest growing

and it’s one of the fastest growing plants in the world it requires very

plants in the world it requires very

plants in the world it requires very little fertilizer inputs also it makes a

little fertilizer inputs also it makes a

little fertilizer inputs also it makes a very light but thermally insulating

very light but thermally insulating

very light but thermally insulating material we add a little bit of lime to

material we add a little bit of lime to

material we add a little bit of lime to it where we can also add clay we can add

it where we can also add clay we can add

it where we can also add clay we can add a little bit of cement as well if we

a little bit of cement as well if we

a little bit of cement as well if we want to get it to set quicker and in our

want to get it to set quicker and in our

want to get it to set quicker and in our work here we decided to make bricks

work here we decided to make bricks

work here we decided to make bricks because one of the limitations with

because one of the limitations with

because one of the limitations with working with lime is that it’s very hard

working with lime is that it’s very hard

working with lime is that it’s very hard to get

to get

to get to set when it’s below -5 degrees or

to set when it’s below -5 degrees or

to set when it’s below -5 degrees or sorry 5 degrees so we figured that if we

sorry 5 degrees so we figured that if we

sorry 5 degrees so we figured that if we could make bricks in advance people if

could make bricks in advance people if

could make bricks in advance people if we told people how to do that and we

we told people how to do that and we

we told people how to do that and we standardized the whole process people

standardized the whole process people

standardized the whole process people could literally build grow and develop

could literally build grow and develop

could literally build grow and develop their own home while of they were

their own home while of they were

their own home while of they were sleeping now

sleeping now

sleeping now I also wanted to talk to you a little

I also wanted to talk to you a little

I also wanted to talk to you a little bit about why I decided to follow this

bit about why I decided to follow this

bit about why I decided to follow this road and how I came to follow what I’m

road and how I came to follow what I’m

road and how I came to follow what I’m calling this yellow brick road through

calling this yellow brick road through

calling this yellow brick road through pardon my pun so a number of years ago I

pardon my pun so a number of years ago I

pardon my pun so a number of years ago I was an IT consultant

was an IT consultant

was an IT consultant it was probably 15 20 years ago yeah I’m

it was probably 15 20 years ago yeah I’m

it was probably 15 20 years ago yeah I’m trying pretend an older member and a

trying pretend an older member and a

trying pretend an older member and a friend of mine said to me you know he

friend of mine said to me you know he

friend of mine said to me you know he was living he had a family home down in

was living he had a family home down in

was living he had a family home down in the West about and he said to me you

the West about and he said to me you

the West about and he said to me you know what there’s laws of wall down here

know what there’s laws of wall down here

know what there’s laws of wall down here and the sheep are just thrown it away

and the sheep are just thrown it away

and the sheep are just thrown it away and you know we did a little bit of

and you know we did a little bit of

and you know we did a little bit of research on it and we realized it you

research on it and we realized it you

research on it and we realized it you know

know

know wall is a very valuable commodity and

wall is a very valuable commodity and

wall is a very valuable commodity and it’s an excellent material for

it’s an excellent material for

it’s an excellent material for insulating so what we decided to do was

insulating so what we decided to do was

insulating so what we decided to do was to set up a company to manufacture

to set up a company to manufacture

to set up a company to manufacture insulation from sheep’s wool now about

insulation from sheep’s wool now about

insulation from sheep’s wool now about eight years later we sold that to

eight years later we sold that to

eight years later we sold that to investors in the UK we stayed with them

investors in the UK we stayed with them

investors in the UK we stayed with them for a little while

for a little while

for a little while and our goal was to be the world’s

and our goal was to be the world’s

and our goal was to be the world’s leading natural insulation company so we

leading natural insulation company so we

leading natural insulation company so we built a factory in Wales and you know we

built a factory in Wales and you know we

built a factory in Wales and you know we were driving around in fancy cars for a

were driving around in fancy cars for a

were driving around in fancy cars for a little while and you know after a while

little while and you know after a while

little while and you know after a while it something began to dawn on me that

it something began to dawn on me that

it something began to dawn on me that this wasn’t really the path that I

this wasn’t really the path that I

this wasn’t really the path that I wanted to be on so we parted company and

wanted to be on so we parted company and

wanted to be on so we parted company and in 2009 I found myself unemployed and

in 2009 I found myself unemployed and

in 2009 I found myself unemployed and not really sure at a crossroads you

not really sure at a crossroads you

not really sure at a crossroads you could even say and not really sure what

could even say and not really sure what

could even say and not really sure what the next thing was so I went back to

the next thing was so I went back to

the next thing was so I went back to college I retrained I became a kind of

college I retrained I became a kind of

college I retrained I became a kind of an

an

an engineer and then a couple of years

engineer and then a couple of years

engineer and then a couple of years later I was down in Cary and I do this

later I was down in Cary and I do this

later I was down in Cary and I do this course in hemp building now I was amazed

course in hemp building now I was amazed

course in hemp building now I was amazed to find that I just drove down this kind

to find that I just drove down this kind

to find that I just drove down this kind of road in the middle of nowhere and

of road in the middle of nowhere and

of road in the middle of nowhere and like I was on the side of a mountain I I

like I was on the side of a mountain I I

like I was on the side of a mountain I I didn’t know what to expect to be honest

didn’t know what to expect to be honest

didn’t know what to expect to be honest and the last bit of the road was only

and the last bit of the road was only

and the last bit of the road was only partly paved and I got up there and I

partly paved and I got up there and I

partly paved and I got up there and I said like I mean even in the right place

said like I mean even in the right place

said like I mean even in the right place but in there I found people from

but in there I found people from

but in there I found people from Singapore from Longford from Dublin from

Singapore from Longford from Dublin from

Singapore from Longford from Dublin from the USA there was a number of people

the USA there was a number of people

the USA there was a number of people from Poland at the center of it was an

from Poland at the center of it was an

from Poland at the center of it was an English guy named Steve Allen and he’s

English guy named Steve Allen and he’s

English guy named Steve Allen and he’s been living in Ireland for 30 years and

been living in Ireland for 30 years and

been living in Ireland for 30 years and he’s a pioneer of hemp building and he’s

he’s a pioneer of hemp building and he’s

he’s a pioneer of hemp building and he’s wrote a couple of books and from that

wrote a couple of books and from that

wrote a couple of books and from that remote carry hillside he has inspired

remote carry hillside he has inspired

remote carry hillside he has inspired what you might call a movement or I

what you might call a movement or I

what you might call a movement or I don’t know something an event happening

don’t know something an event happening

don’t know something an event happening but it’s an awakening of interest in

but it’s an awakening of interest in

but it’s an awakening of interest in building with hemp and you know when I

building with hemp and you know when I

building with hemp and you know when I delved into it a little bit more I found

delved into it a little bit more I found

delved into it a little bit more I found that you know he wasn’t even the first

that you know he wasn’t even the first

that you know he wasn’t even the first he was he had taken up the baton from

he was he had taken up the baton from

he was he had taken up the baton from people in France who had developed this

people in France who had developed this

people in France who had developed this idea as a way of conserving old

idea as a way of conserving old

idea as a way of conserving old buildings and a few years later I found

buildings and a few years later I found

buildings and a few years later I found myself doing a PhD and in my PhD now I’m

myself doing a PhD and in my PhD now I’m

myself doing a PhD and in my PhD now I’m trying to standardize this stuff because

trying to standardize this stuff because

trying to standardize this stuff because you can’t imagine this with any new

you can’t imagine this with any new

you can’t imagine this with any new technology that emerges where you have

technology that emerges where you have

technology that emerges where you have people from all walks of life who are

people from all walks of life who are

people from all walks of life who are trying to how would you say make

trying to how would you say make

trying to how would you say make something happen but for themselves it’s

something happen but for themselves it’s

something happen but for themselves it’s very difficult then to kind of get that

very difficult then to kind of get that

very difficult then to kind of get that to penetrate to a larger group of people

to penetrate to a larger group of people

to penetrate to a larger group of people you need to be a specialist to do it and

you need to be a specialist to do it and

you need to be a specialist to do it and all this kind of thing but I think that

all this kind of thing but I think that

all this kind of thing but I think that this is such an opportunity I mean this

this is such an opportunity I mean this

this is such an opportunity I mean this material can help us to save so much

material can help us to save so much

material can help us to save so much energy so many carbon emissions all the

energy so many carbon emissions all the

energy so many carbon emissions all the plastic houses I showed you earlier you

plastic houses I showed you earlier you

plastic houses I showed you earlier you can imagine what they’re made of they’re

can imagine what they’re made of they’re

can imagine what they’re made of they’re made of petrochemicals they’re made of

made of petrochemicals they’re made of

made of petrochemicals they’re made of concrete which is a very high pollutant

concrete which is a very high pollutant

concrete which is a very high pollutant so I had to learn one little lesson from

so I had to learn one little lesson from

so I had to learn one little lesson from all of the work that I had done up to

all of the work that I had done up to

all of the work that I had done up to that point in time I had to absorb it I

that point in time I had to absorb it I

that point in time I had to absorb it I had tried to be a leader in my field and

had tried to be a leader in my field and

had tried to be a leader in my field and I found myself on a path that I wasn’t

I found myself on a path that I wasn’t

I found myself on a path that I wasn’t really comfortable with I had to step

really comfortable with I had to step

really comfortable with I had to step back from that path and look at it life

back from that path and look at it life

back from that path and look at it life from a different perspective perspective

from a different perspective perspective

from a different perspective perspective where you come along and you build on

where you come along and you build on

where you come along and you build on what other people have pioneered and you

what other people have pioneered and you

what other people have pioneered and you try and add a little bit to it and then

try and add a little bit to it and then

try and add a little bit to it and then hopefully you create a set of guidelines

hopefully you create a set of guidelines

hopefully you create a set of guidelines are a little bit of information or a

are a little bit of information or a

are a little bit of information or a little bit of help that somebody else

little bit of help that somebody else

little bit of help that somebody else can come along and take and run and

can come along and take and run and

can come along and take and run and build their own home and grow their own

build their own home and grow their own

build their own home and grow their own home it’s all really what I want to say

home it’s all really what I want to say

home it’s all really what I want to say to you is what I learnt about leading is

to you is what I learnt about leading is

to you is what I learnt about leading is that first you have to learn how to

that first you have to learn how to

that first you have to learn how to follow thank you

follow thank you

follow thank you [Applause]

”

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