Scientists measure Earth's cosmic tan Scientists at Los Alamos National Laboratory have developed a method of measuring the length of time that surface rocks have been exposed to cosmic rays. Cosmic rays stream in from all directions in outer space and produce neutrons when they collide with air molecules. When these neutrons hit the ground, they react with a tiny number of mineral atoms which create radioactive isotopes. At sea level, a few hundred modified atoms are created each year in each gram of quartz which is exposed to the sun. New measuring techniques can detect very small numbers of these atoms and thus estimate the number of years that the rocks have been exposed.
Many Jewish leaders are concerned about the increased rate of interfaith marriages.
A Kingston ON photo shop owner has sold at least 200 copies of a color photograph in the last three weeks. Some people think that it looks like a picture of a volcano or a mushroom. Origin of the photo is obscure, but many people believe it was taken by a woman from the window of a airplane. A photographic specialist determined that it was a photo of another photo or of a painting. He saw shadows where air brushing might have been added.