Technology

Children in Punta Arenas, Chile, the world’s most southern city, look forward to spring as much as anyone who lives through a frigid, dark winter. But some years, the children are instructed not to go outside because the ozone hole has moved north and the UV radiation is too high. …

No one can predict exactly when a volcanic eruption will take place. There are clues, but no one knows exactly when. Sometimes a volcano will erupt when scientists are studying it. Volcanologists have a high fatality rate among scientists because forecasting eruptions is so difficult. Predicting Volcanic Eruptions Volcanic eruptions …

Weather forecasts are better than they ever have been. According to the World Meteorological Organization (WMO), a 5-day weather forecast today is as reliable as a 2-day forecast was 20 years ago. Now there’s no excuse to be rained out on a picnic! The most accurate weather forecasts are made …

After the sun’s energy enters the Earth’s atmosphere the heat is either absorbed—(taken in, reflected—hitting a barrier and bouncing off), or scattered—(hitting a barrier and bouncing off in many different directions). The heat left on Earth is equal to the amount of heat absorbed minus the amount of heat given …

In areas of the Central Coast where winter rainfall typically exceeds 25 inches per year, and especially on sloped ground, cover cropping in annual vegetable cropping systems is highly advisable to protect non-cropped soil from both erosion and nutrient leaching. Based on numerous studies, the optimum time for planting winter …