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MathTrek.

Prime record A computer search turned up the 40th Mersenne prime. It's a 6,320,430-digit behemoth that now holds the record as the largest known prime number (www.sci encenews.org/20031206/mathtrek.asp).

Faulty randomness Researchers provided new mathematical insight into why certain random-number generators give wrong results in some computational experiments and simulations (www.sciencenews.org/ 20030927/mathtrek.asp).

Even larger The Goldbach conjecture--every even number larger than 2 is the sum of two prime numbers--has been verified up to 6 x [10.sup.16] (www.sciencenews.org/ 20031011/mathtrek.asp).

Shape superformula A new, simple equation generates a wide variety of appealing and biologically relevant shapes (www.sci encenews.org/20030503/mathtrek.asp).

Election reversal In votes involving three or more candidates, many election procedures can produce the same result when voter preferences are reversed (www.science news.org /20031018/mathtrek.asp).

Electronic paper Changeable ink and battery-powered paper could eventually make textbooks lighter and bring video newspapers into daily use (www.science newsforkids.org/articles/20031203/Fea ture1.asp).

Dinosaur growth Learning how fast dinosaurs grew may clarify their link with birds (www.sciencenewsforkids.orgy/arti cles/20031126/Feature1.asp).

Defying gravity A gecko's remarkable grip on walls and ceilings suggests new types of sticky materials (www.science newsforkids.org/articles/20031119/ Feature1.asp).

Victual reality Computer technology that puts kids in a cartoon classroom may help children with attention disorders learn to pay attention (www.sciencenewsforkids.org/ artieles/20031022/Feature1.asp).

Counting crows Animals that can count or find quick routes to a goal have taught scientists a thing or two about how to handle numbers (www.science newsforkids.org/articles/20031008/ Feature1.asp).

Venom delivery Poisonous snakes appear to control the amount of venom that they inject into their victims (www.science newsforkids.org/articles/20030903/ Feature1.asp).

Sky dust Dust raining down from space and Earth's atmosphere provides information about weather patterns, pollution, and the origin of the universe (www.science newsforkids.org/articles/20030813/ Feature1.asp).
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Title Annotation:Science News for Kids
Publication:Science News
Date:Dec 20, 2003
Words:335
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