While Bush Jr was definitely doing it to give yet another handout to corn growers, it solved a real problem.

After we phased out TetraEthyl Lead from gas, we still needed an octane booster, because for gas to be cheap, it uses low octane components. So we used something called MTBE. The problem is that your average corner gas store has terrible infrastructure, and their gas tank leaks a lot. MTBE kept getting into water sources and hurting people.

Ethanol is a good octane booster, and it doesn't poison anyone or the environment. It also slightly reduced dependence on foreign oil at a time when that was still an issue.

So it's wasteful, not at all "Green", and inefficient, but do we have a replacement octane booster that wont poison people?

It's not at all a jobs program. Corn growing is extremely mechanized. It's done entirely by megacorp megafarms. They are very wealthy companies owned by very wealthy people who continue to vote for republicans exclusively for lower taxes on wealthy people. They don't do it for better policy, as Trump alone has cost that industry over $30 billion in lost sales during his two terms, from poorly run trade wars.

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akiselev 2 hours ago | parent [-]

> So it's wasteful, not at all "Green", and inefficient, but do we have a replacement octane booster that wont poison people?

I'm not sure it's all that wasteful. The waste product from biofuel production is distillers grains [1] which are just fed back to animals afterward for the protein, fiber, and fat content.

[1] https://en.wikipedia.org/wiki/Distillers_grains

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stymaar an hour ago | parent [-]

It's wasteful in the sense that we are exploiting lots of land for the limited value it brings.

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akiselev an hour ago | parent [-]

The vast majority is grown on marginal land, just above pasture. They can't grow better crops without massive works of engineering and tons more fertilizer and energy use. The alternative is to just use slightly less of that land, because the animals are going to have to replace that feed from somewhere. Distillers grains are valuable because the fat and protein are used for finishing cattle for human consumption in feedlots so the sugars are either going to the cows or the biofuels.

The "limited value" isn't so limited when we're talking about an additive to gasoline. The first thing we tried polluted the entire world with a background level of lead!

	▲	throwaway27448 32 minutes ago \| parent [-]
		Of course, it also destroys the topsoil without careful management