The carbon cycle - Nathaniel Manning

Transcriber: tom carter Reviewer: Bedirhan Cinar

Prevoditelj: Ivan Stamenković Recezent: Senzos Osijek

Carbon dioxide, or CO2, is the main greenhouse gas in climate change.

Ugljikov dioksid, ili CO2, je glavni staklenički plin u klimatskim projmenama.

So how does CO2 get into our atmosphere?

Kako CO2 dolazi u našu atmosferu?

Well, carbon is part of a cycle. It starts with the sun,

Pa, ugljik je dio ciklusa. Počinje sa suncem,

which heats the Earth's surface with more energy

koje zagrijava Zemlju sa više energije

in one hour than the whole world uses in a year.

u jednom satu nego što svijet koristi u godini.

Plants, which are kind of like biological chefs,

Biljke, koje su biološki kuhari,

take that sunlight, and then suck in some CO2 from the air,

uzimaju svjetlost, i nešto CO2 iz zraka,

mix them together, and BAM!

mješaju ih i BAM!

They create a stored form of energy, in the form of carbohydrates

Stvaraju uskladištenu energiju, u obliku ugljikohidrata

such as glucose and sucrose.

kao što su glukoza i saharoza.

The process is called photosynthesis.

Proces se zove fotosinteza.

When animals like us eat those plants

Kada životinje poput nas jedu te biljke

our stomachs convert that food back into energy for our own growth.

naši želuci pretvaraju hranu u energiju za naš rast.

Greenhouse gases are a byproduct of this process,

Staklenički plinovi su nusprodukt tog procesa,

and are released through waste.

i ispuštaju se kroz izmet i otpad.

If those plants die, they decompose, and tiny microorganisms break down those carbohydrates

Ako te biljke umru, raspadaju se, i maleni mikroorganizmi razgrađuju ugljikohidrate

and again, release greenhouse gases as a byproduct.

i ponovno oslobađaju stakleničke plinove kao nusprodukt.

As you see, energy originates from the sun. It is then transferred as it moves through the food chain.

Kao što vidite, sunce je izvor energije, Premješta se napredujući hranidbenim lancem.

But sometimes, carbon based organisms like plants or animals get stuck in the earth.

Ali ponekad, organizmi bazirani na ugljiku kao biljke ili životinje, zapnu u zemlji.

When this happens, they're compressed under tons of pressure,

Kada se to dogodi, komprimirane su pod tonama pritiska,

and turned into carbon-based fossil fuels

i pretvaraju se u fosilna goriva

like oil, coal or natural gas.

kao nafta, ugljen ili zemni plin.

Since the Industrial Revolution, humans have been pulling those fossil fuels out of the ground

Od Industrijske revolucije, ljudi izvlače fosilna goriva iz zemlje

and burning them, activating the stored energy

i pale ih aktivirajući spremljenu energiju

to make electricity and power engines.

kako bi stvarali struju i pokretali motore.

But the thing is it also releases millions of years worth of stored CO2 back into the air.

Ali stvar je da se također milijini godina skladištenog CO2 idu natrag u zrak.

In addition, humans breathe in oxygen and breathe out CO2.

Također, ljudi udišu kisik, izdišu CO2

But plants do the opposite.

Ali biljke čine suprotno.

Trees suck up huge amounts of CO2, which balances the cycle.

Drveće usisava ogromne količine CO2, što balansira ciklus.

Thus, deforestation reduces the plants that store CO2.

Zbog toga, uništavanje šuma smanjuje broj biljaka koje skladište CO2.

We're attacking the cycle from both sides.

Napadamo ciklus s obje strane.

Think of it like a computer. A computer can operate a few programs at a time, right?

Zamislite to kao računalo. Računalo može odjednom pokrenuti nekoliko programa.

Normally, when you've finished with a document, you save, and you close it,

Normalno, kada završite s dokumentom, spremite ga i zatvorite,

so as not to overwork the computer.

tako da ne troši resurse računala.

Then, imagine you stopped closing your documents.

Zamislite sada da ste prestali zatvarati dokumente.

So they were all open at once.

Tako da su svi bili otvoreni odjednom.

Your computer wouldn't be able to process it all.

Vaše računalo to ne bi moglo procesuirati.

It would start to slow down, and then to freeze, and eventually it would crash.

Usporilo bi i potom stalo, i napokon bi se srušilo.

Which might be where our environment is heading if we keep overloading the carbon cycle.

To je trenutak prema kojem ide okoliš, nastavimo li ga preopterećivati ugljikom.

So is there any way to rebalance the ecosystem?

Postoji li način da uravnotežimo ekosustsav?

What about technology? Technology is defined as a technique to solve a problem.

Što je s tehnologijom? Tehnologija je definirana kao način za rješavanje problema.

And so, sustainable technologies are those whose output is equal to their input.

I tako, održive tehnologije one su čiji je input jednak outputu.

They do not create negative externalities,

Ne stvaraju negativne vanjske stvari,

such as CO2, in the present or the future.

kao CO2, u sadašnjosti i budućnosti.

They sort of cancel themselves out to solve the problem.

Poništavaju se kako bi riješile problem.

To achieve this, we need to invent sustainable technologies.

Da bi to postigli, moramo izumiti održive tehnologije.

If we put all the ideas and technologies ever created into one circle,

Ako stavimo sve ideje i tehnologije ikad stvorene u krug,

then invention is the pushing of the boundaries of that circle.

onda je izum guranje tih granica tog kruga.

And the area outside of the circle is infinite,

I područje izvan kruga je beskonačno,

meaning the potential for invention is limitless.

jer je potencijal za izume bezgraničan.

Think about some of the incredible clean technologies we have today. [Wind; Electric & Solar Cars; Biogas]

Razmislite o nekim nevjerojatnim čistim tehnologijama koje imamo danas. [Vjetar, električni auti, biogorivo.]

[Biofuels; Photosynthetic Algae; Compost] All those ideas have one thing in common.

[Fotosintetske alge, kompost] Sve te ideje imaju jednu zajedničku stvar.

They all came from people. People innovate.

Sve dolaze od ljudi. Ljudi inoviraju.

People create. It's the limitless potential of creative people

Ljudi stvaraju. To je neograničeni potencijal kreativnih ljudi

to build unimagined technologies that is going to stop climate change

da grade nezamislive tehnologije koje će zaustaviti klimateske promjene

and rebalance the ecosystem. And that is something to be hopeful about.

i balansirati ekosistem. I to je nešto čemu se treba nadati.