Linear take, make, waste.

Whenever we burn something, we're using a very inefficient process.

Every time you do so, some of the energy contained in the original fuel is lost.

Saul Griffith did the numbers and figured out what would it take to get 13 clean terawatts of energy from wind, solar and biofuels, and that area would be roughly the size of the United States, an area he refers to as Renewistan.

Another motivation, of course, is climate change.

Fuel, Skripach, fuel...

Now, whether we're talking about fuels or energy carriers, or perhaps novel materials for batteries or fuel cells, nature hasn't ever built those perfect materials yet because nature didn't need to.

I need fuel.

Primary fuel?

Fuel supply?

Our fuel.

They have grieved it, they have died into it, and allowed and encouraged poison to turn into medicine.

I'm glad you heard earlier today, batteries are unbelievably

lack density compared to fuel.

Drop the fuel tanks and pull up!

It's like Michigan... hardcore propellant.

Mine fuel

Primary fuel 2893 KRG.

What is he saying about the fuel?

Fuel cells.

In fact, since 95 percent of the weight you're moving is the car not the driver,

I was, you can see there, pulling two sledges.

A lot of environmentalists who are always trying to drive us towards using less energy, because all that energy's coming from the consumption of fossil fuel.

The source of fuel crude oil.

Jet fuel.

I mean global warming certainly is a massive threat to mankind and we are putting a lot of time and energy into,

So here's a question

no food, hardly any gas left.

One unit like this is an energy unit of fossil fuel oil, coal or gas.

Rp7 rocket fuel burns at 5.000 degrees.

It's chemically fueled.

Fuelinjected.

But I'm not really concerned about the fuel.

In this kind of reactor, you can't do that.

Without your protective gear on.

So more people, eating more stuff, and richer stuff, and of course having an energy crisis at the same time, where we have to replace oil with other energy sources that will ultimately have to include some kinds of biofuels and bio energy sources.

We've talked about the soil erosion.

You have to keep putting more force, keep putting more energy into it for it to keep going

I made a promise that the next time I would fly around the world, it would be with no fuel, independent from fossil energies, in order to be safe, not to be threatened by the fuel gauge.

I can't give you a fuel injection.

Fill her up.

Like those cars that run on corn.

We're losing fuel.

We have a fuel leak!

The only reason modern agriculture can get away with killing the life in the soil is through another use of fossil fuel.