Word: lands
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Dates: during 2000-2009
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...those ovens used to be ubiquitous, but most of the trees are gone. I had to travel hours through converted Cerrado to see a 96-acre (39 hectare) sliver of intact Cerrado, where a former shopkeeper named Lauro Barbosa had spent his life savings for a nature preserve. "The land prices are going up, up, up," Barbosa told me. "My friends say I'm a fool, and my wife almost divorced me. But I wanted to save something before it's all gone...
...creep is now becoming apparent. One groundbreaking new study in Science concluded that when this deforestation effect is taken into account, corn ethanol and soy biodiesel produce about twice the emissions of gasoline. Sugarcane ethanol is much cleaner, and biofuels created from waste products that don't gobble up land have real potential, but even cellulosic ethanol increases overall emissions when its plant source is grown on good cropland. "People don't want to believe renewable fuels could be bad," says the lead author, Tim Searchinger, a Princeton scholar and former Environmental Defense attorney. "But when you realize...
Industry advocates say that as farms increase crop yields, as has happened throughout history, they won't need as much land. They'll use less energy, and they'll use farm waste to generate electricity. To which Searchinger says: Wonderful! But growing fuel is still an inefficient use of good cropland. Strange as it sounds, we're better off growing food and drilling for oil. Sure, we should conserve fuel and buy efficient cars, but we should keep filling them with gas if the alternatives are dirtier...
...lesson behind the math is that on a warming planet, land is an incredibly precious commodity, and every acre used to generate fuel is an acre that can't be used to generate the food needed to feed us or the carbon storage needed to save us. Searchinger acknowledges that biofuels can be a godsend if they don't use arable land. Possible feedstocks include municipal trash, agricultural waste, algae and even carbon dioxide, although none of the technologies are yet economical on a large scale. Tilman even holds out hope for fuel crops--he's been experimenting with Midwestern...
...which cleared its forests and settled its frontier 125 years ago but still provides generous subsidies to its farmers--attack him for doing the same thing except without subsidies and with severe restrictions on deforestation. Imagine Iowa farmers agreeing to keep 80%--or even 20%--of their land in native prairie grass. "You make us sound like bandits," Maggi tells me. "But we want to achieve what you achieved in America. We have the same dreams for our families. Are you afraid of the competition...