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A Journey Inside the Micro-world | Wim van Egmond | TEDxGateway


you may know a lot about the city you

live in about the plants and animals

around you but what do you know about

what you can’t see about life too small

to catch with the naked eye only a few

steps away from you there are unknown

territories waiting to be explored today

I will take you on a journey inside the

micro world I’m a photographer and I

make portraits of microorganisms my work

is being used in art exhibitions as well

as for science education and I helped

create the first Museum about microbes

in Amsterdam now where shall we start us

our journey what do we need first of all

a microscope and I happen to have one

with me this is the microscope Antony

van Leeuwenhoek used with this

he discovered the micro world in water

from a lake it’s the birth of

microbiology and by pure coincidence I

happen to live at the exact spot

reverend layman Luke did his great

discovery the first microorganisms he

described he found he described as green

coils regular green tendrils that’s the

exact word regular coils about the

thickness of a human hair made out of

little balls it’s been a bit of a

mystery what they were but recently I

discovered their identity they are

cyanobacteria that’s when I learned you

don’t have to be a scientist to make

discoveries and did you know that Walt

let’s dive into the micro world and find

out more we are in the lake now with

cyanobacteria these organisms were the

first to use light as an energy source

long before the plants evolved the

cyanobacteria created the oxygen in the

Earth’s atmosphere they are very

important to us without them we wouldn’t

be there nowadays there are many other

organisms that feed on sunlight

we call them algae the best architects

in the micro world are lv2 the diatoms

you may think that humans are good at

architecture the diatoms master did

millions of years before us and they

built their houses of glass let’s travel

further in case you hadn’t noticed many

algae move they use beating hairs to

swim towards the sunlight or to avoid

predators because life is hard when

you’re only one twentieth of a

millimeter so many organisms many algae

form colonies to grow bigger and bigger

Volvox can grow to the size of one

millimeter algae are great but my

favorite microorganisms are the ciliates

what would a micro Safari be without the

giraffe of the micro world luckily

maravilla

alors it can stretch its body to the

extreme so watch out in the front rows

it’s a predator we are now at the bottom

of the lake where paramecia graze on

bacteria what they don’t realize is that

lurking there is a fearsome hunter the

amoeba amoebas are not just simple blobs

yes this one actually grabs the

Paramecium compared to us they may look

simple but isn’t it much more admire

about how they cope we humans need a

huge complicated body made out of

trillions of cells to eat a simple

sandwich

amoebas don’t need all that one cell no

brain still they’re capable of very

surprising behavior the miniature jungle

on the water is dangerous place when you

are a company la and your arch enemy

truck Helius is approaching you

you don’t need fangs or claws when you

have a big mouth it’s actually not a

true mouth turkey leus engulf its prey

and shoot some poisonous darts into it

fix them to paralyze it silly aids are

amongst the most advanced microorganisms

every Safari needs scavengers to OFI

Alina’s are feasting inside the remains

of a dead organism the extreme

flexibility helps them to reach even the

narrowest parts and the most surprising

thing is yeah that number 2 will follow

its friend almost immediately

look I wouldn’t call this consciousness

but it’s clever for a single cell

there are also multicellular true

animals of microscopic scale the

rotifers they invented the wheel no they

didn’t if it’s the hairs they used to

sweep in food particles but one group of

rotifers is special they have discarded

the male’s

there are no there are only females yes

it’s possible

males are so overrated we don’t really

need them so ladies next time a man

tells you what to do remind him of the

rotifers are you already feeling at home

in the microworld some of these micro

animals can even have a relaxing effect

on you

don’t you want to have this water flee

as a pet the microbe dressage is very

hard you can even witness the birth of a

water flea look isn’t that amazing the

microworld is full of amazing characters

okay

some are scary okay we are now at the

edge between water and land what happens

if the water dries up the water bear can

form escape capsules that can with

withstand extreme conditions heat cold

radiation it can even be shot into the

vacuum of outer space it can last for

several decades like this impressive but

ultimate survivors are the bacteria

their spores can survive for millions of

years

eventually bacteria are the basis of

life it all starts and ends with the

bacteria we humans are just there as a

nice ornamentation we’re back where to

go next

how about soil life just press the heel

of your shoe in a petri dish and you get

a glimpse of what lives underneath our

feet we know so much about the moons and

the planets around us but what do we

know about the soil we stand on or those

aliens in the lake there’s still so much

to discover just around the corner not

just for scientists but also for

adventurers with a microscope so

remember you don’t have to be a

scientist to make discoveries even a

simple photographer like me to make

groundbreaking scientific discoveries I

end with my own contribution to science

my latest study about the musical

capabilities of the water flea

[Music]

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[Music]

Oh

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