Short Takes.

HAS-BEEN?

Could 3-year, old Dolly, the first animal cloned from an adult cell, age prematurely? Scientists discovered that Dolly's telomeres, cell materials that indicate aging, are more deteriorated than those of normal sheep.

MARS TIME

U.S. kids have helped astronomers create the Martian Sundial--to be permanently placed on Mars in 2002. The sundial will cast shadows on the planet so scientists can study time and seasons on Mars.

SMART BUS

A service called BusCall warns students when to meet the school bus. A Global Positioning System (GPS) receiver tracks bus locations by calculating the bus's distance to satellites, then dials homes to get kids.