This week’s subject: WeatherForecasters say this winter’s...

This week’s subject: Weather

Forecasters say this winter’s El Nino may be the climate event of the century. If it is, it will show how a weather change in one part of the world can affect climates in other places. El Nino is a change in the ocean-atmosphere system of the tropical Pacific, butits impact can be global. To learn more about weather, use the direct links on The Times’Launch Point Web site at http//www.latimes.com/launch/