Despite what you see on certain product labels at garden centers, fertilizer is not plant food. Foods are carbon-based substances - primarily carbohydrates, fats and proteins - that organisms can break down to provide energy and the building blocks to construct and repair living tissue. ...more

October 25, 2009

When winter temperatures dip into freeze territory, it's best not to try the farmers' trick of coating plants with a thin coating of ice to help them escape damage. ...more

February 11, 2009

The ice core samples come from one of the most mysterious places on Earth — Lake Vostok — which lies hidden more than two miles beneath the frozen surface of Antarctica. Vostok is the largest of about 140 subglacial fresh-water lakes in Antarctica. It was discovered in 1996 by scientists using radar, and many experts call it the most untainted lake on the planet. ...more

December 9, 2007

Millions of Americans, especially children, are needlessly getting dangerous radiation from "super X-rays" that raise the risk of cancer and are increasingly used to diagnose medical problems, a new report warns. ...more

November 29, 2007