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College presidents want lower drinking age

College presidents from about 100 of the best-known U.S. universities, including Duke, Dartmouth and Ohio State, are calling on lawmakers to consider lowering the drinking age from 21 to 18, saying current laws actually encourage dangerous binge drinking on campus.

The movement called the Amethyst Initiative began quietly recruiting presidents more than a year ago to provoke national debate about the U.S. drinking age, which is among the highest in the world. But even before the presidents begin the public phase of their efforts, which may include publishing newspaper ads in the coming weeks, they are already facing sharp criticism. Mothers Against Drunk Driving says lowering the drinking age would lead to more fatal car crashes. It accuses the presidents of misrepresenting science and looking for an easy way out of an inconvenient problem. Both sides agree alcohol abuse by college students is a huge problem.

Research has found more than 40% of college students reported at least one symptom of alcohol abuse or dependence. Another one has estimated more than 500,000 full-time students at four-year colleges suffer injuries each year related in some way to drinking, and about 1,700 die in such accidents.

(www.usatoday.com/news/education/2008-08-18-college-drinking. Adaptado)

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Biofuels

Biofuels have been around as long as cars have. At the start of the 20th century, Henry Ford planned to fuel his Model Ts with ethanol, and early diesel engines were shown to run on peanut oil.

But discoveries of huge petroleum deposits kept gasoline and diesel cheap for decades, and biofuels were largely forgotten. However, with the recent rise in oil prices, along with growing concern about global warming caused by carbon dioxide emissions, biofuels have been regaining popularity.

Gasoline and diesel are actually ancient biofuels. But they are known as fossil fuels because they are made from decomposed plants and animals that have been buried in the ground for millions of years. Biofuels are similar, except that they’re made from plants grown today.

(www.science.nationalgeographic.com/science/environment. 18.08.2008. Adaptado)

Assinale a alternativa que completa corretamente a lacuna na sentença – Biofuels have been regaining popularity ___________ the recent rise in oil prices and global warming caused by carbon dioxide emissions. – de modo a expressar a idéia do texto.