President Lula says the largest ethanol exporter makes fuel from sugar, not corn. And there's a sugar surplus.
Speculation and a falling dollar may now be as important as supply and demand, analysts say.
Bye bye, bulk. New lines of tiny PCs fit both in your purse and into third-world classrooms.
These plant-filled landscapes are done on a scale of 1 inch equals 1 foot.
Eco-minded Scandinavians crave winter vacations. Yet the long flights add to greenhouse gases. Should they hit the beach or save the planet?