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During the past few years, evidence has been accumulating to support Physicist Luis Alvarez's theory that a giant comet (or asteroid) struck the earth 65 million years ago, pulverizing a huge area and spewing so much debris into the atmosphere that the skies darkened for months, temperatures dipped, and much of the life on earth--most notably the dinosaurs--perished. It was the demise of the dinosaurs, many evolutionists believe, that enabled man's tiny mammalian ancestors to emerge from hiding, occupy the environmental niches left vacant by the great beasts and other destroyed species, and evolve into Homo...

Author: /time Magazine | Title: Science: Historic Cometary Tales | 12/16/1985 | See Source »

...course I did not return," Schmidt snapped. "I didn't want a pardon." What he wanted was a test before the human rights tribunal. He got it after the IAPA persuaded Costa Rican President Luis Alberto Monge Alvarez to petition the human rights court for a ruling. Schmidt triumphed, thanks in part to a number of amicus briefs filed on behalf of groups that support freedom of the press, including one by noted Washington Lawyer Leonard Marks and another by Floyd Abrams, one of the U.S.'s foremost experts on press freedom. Nonetheless, President Monge has pointed out, "the opinion...

Author: /time Magazine | Title: Press: Strong Message to Censors | 12/16/1985 | See Source »

...world may someday end with a whimper, but evidence is mounting that the dinosaurs went out with a bang. According to the much debated theory proposed by the father-son team Luis and Walter Alvarez in 1980, an asteroid or comet slammed into the earth at the end of the Cretaceous period, 65 million years ago, spewing so much dust into the atmosphere that sunlight was blocked for months. Temperatures plummeted, plants withered, and many species, including the mighty dinosaurs, perished en masse...

Author: /time Magazine | Title: Science: Comet Fire:Did it doom the dinosaurs? | 10/14/1985 | See Source »

Like many other spectacular discoveries, Anders' finding was serendipitous. He and his co-workers had simply hoped to elaborate on the Alvarez hypothesis by detecting trace amounts of rare noble gases, like neon and xenon, in the layer of Cretaceous clay deposited during roughly the same period that the dinosaurs became extinct. They were seeking to identify the nature of the object responsible for the impact. Because noble gases collect in carbon particles, the scientists isolated the carbon in Cretaceous sediment taken from Denmark, Spain and New Zealand. To their surprise, all three samples contained carbon that had been deposited...

Author: /time Magazine | Title: Science: Comet Fire:Did it doom the dinosaurs? | 10/14/1985 | See Source »

...mythic figure whom many have claimed to have seen just about everywhere. The ubiquity is partly explained by the thesaurus of aliases under which he operated. At one point, Mengele called himself "Fausto Ridon," at another "Friederich Elder von Breitenbach." He also passed himself off as "Gregorio Gregori," "Jose Alvarez Aspiazu" and "Pedro Caballero...

Author: /time Magazine | Title: Searches the Mengele Mystery | 6/24/1985 | See Source »

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