Name: 地球2050年 - フルレングスビデオ (Earth 2050 - full length video)
Uploaded: 2021-01-14T04:56:39.000Z
Duration: 43 min 39 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Jay Keasling: We are in a race. the race is against time.

But we have to make them in a different way.

Dan Kammen: We need a wave of innovation,

not only for our way of life, but also for the planet.

The consequences would be enormous if we lose

Thomas Goetz: I'm Thomas Goetz, executive editor at Wired

at the innovators and innovations that are changing

hour, we'll see three stories from acclaimed filmmakers about

We'll explore cutting edge innovations in how we drive,

and, in our first story, how we fuel our cars.

The world has right now, close to a billion cars,

vehicles, we really increase the amount of fuel they consume, and

that's going to have a big, big footprint in terms of our demand

for resources to move all those vehicles around.

Kay Keasling: We're pulling up carbon that's been stored

automobiles and putting all that carbon dioxide into the

If we don't reduce that, we could have changes in the

climate that we could never recover from.

There's a number of forecasts for what type of transportation

One vision is that we would use more and more liquid fuels,

another one is we'll use more and more electricity.

industrial activity is focused around liquid biofuels.

The thing about a fuel is, its really unparalleled on a weight

basis how much energy is in a gallon of fuel.

And even if batteries develop as some of the

advocates hope they develop, we're not going to see batteries

running large trucks and we're certainly not

We're going to need transportation fuels for

those that will directly replace the petroleum based

This has kicked off people looking at a whole range of

other alternatives to petroleum in your tank.

Isaias Macedo: Commercial production of ethanol as fuel

started the ethanol program, nobody talked about reducing

emissions. This was not an issue at that time.

First, and most important, we didn't have money

to buy oil anymore after the first oil short.

And today, more than 50% of all cars use ethanol

Brazil made a very conscious choice to try to find a way to

And they didn't have to look very far because Brazil's

Carlos Dinucci: when you have sugar cane plantation,

My family has been in the sugarcane business since 1955

"there's an opportunity to make more ethanol."

Now, we're producing 120,000 cubic meters of ethanol.

Brazil today has very close to 400 sugar mills.

The overall sales is 30 billion us dollars.

If you look at how they make ethanol and how efficient the

process is, it's really a model for all of us.

They grind the plant up, extract the sugar from the

cane, the sugar goes into these large fermentation tanks which

combine sugars together with yeast that naturally produces

of the plant to generate heat to distill the ethanol

They also use that heat to generate electricity renewably,

not putting excess carbon dioxide into the atmosphere.

Brazil has gotten to a point today where they're using about

40% less petroleum than they would be otherwise, but Brazil

cannot supply the whole world with ethanol because they

would have to cut very strongly into food

production and into critical natural areas like the Amazon to

This really boils down to the fact that there's only so much

arable land, and growing fuel for our gas tanks is yet another

We cannot kid ourselves into thinking that we've found a

I think we have to face the world in this way today.

We have no oil in very large quantities anymore.

We have no coal transforming in a clean way, in the meantime we

have to do the best we can, and the best at

Sugarcane to ethanol is an incredibly efficient process.

You get out about seven times the energy you put