Many farmers in developing nations can double food production within a decade by shifting to ecological agriculture from use of chemical fertilizers and pesticides, a U.N. report showed on Tuesday. Insect-trapping plants in Kenya and Bangladesh’s use of ducks to eat weeds in rice paddies are among examples of steps taken to increase food for…

The health risks from toxins such as lead in old paint or asbestos in walls are too often overlooked when homes are upgraded, according to a study on Sunday calling on governments to set tougher pollution rules. The report, by Canadian experts, said that retrofits of old buildings, such as insulation meant to save energy…