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Rotting vegetation and erupting volcanoes release some chemicals that can cause acid rain, but most acid rain falls because of human activities. The biggest culprit is the burning of fossil fuels by coal-burning power plants, factories, and...
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Chiseled out of the rose-colored sandstone cliffs of southwestern Jordan, the ancient city of Petra protects long-held secrets as it once protected its inhabitants. Built as the capital of the Nabataean kingdom some 2,000 years ago, Petra prospered as a...
Members of one of Brazil’s few remaining “uncontacted” tribes, their bodies painted with red and black dye, shoot arrows at a surveillance plane from their rain forest encampment in western Brazil near the Peruvian border.
These dinosaurs were the prehistoric tanks of their time. Ankylosaurus magniventris was covered with hard, bony plates that offered superb protection from its most formidable predator—T. rex. Rows of spikes ran along Anklyosaurus’s body, and...
Atlantic puffins have penguin-like coloring but they sport a colorful beak that has led some to dub them the “sea parrot.” The beak fades to a drab gray during the winter and blooms with color again in the spring—suggesting that it may be...
The prehistoric relatives of this megafish inhabited many parts of the world, but today gars live only in North and Central America.
Cicadas are probably best known for their buzzing and clicking noises, which can be amplified by multitudes of insects into an overpowering hum. Males produce this species-specific noise with vibrating membranes on their abdomens. The sounds vary widely...
Butterflyfish, with their amazing array of colors and patterns, are among the most common sites on reefs throughout the world.
The brassy, bawdy musical “Mamma Mia!” presents itself as a piece of clever counterprogramming to this summer’s surfeit of pounding, effects-driven comic-book movies. What could provide a better antidote to a “Dark Knight”...
Merrill Lynch reported a $4.65 billion loss during its second quarter yesterday, surpassing the expectations of the most pessimistic analysts and underscoring the continued toll of the subprime mortgage meltdown even as economists and policymakers turn...
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