Walt Disney Co. has banned all tobacco sales at Disneyland and its four Florida theme parks in a likely precursor to outlawing smoking entirely at the parks except in a few designated

Snowmobiles produce nearly all the air pollution in Yellowstone National Park, sometimes fouling the air twice as much as is found in parts of Los Angeles, researchers say.The National Park Service

Russia's population continued its sharp decline during the first eight months of the year, falling by 521,000 people, a news report said

The asthma epidemic visited Children's National Medical Centre one recent Friday, the day after a furious rainstorm kicked up allergens all over

The city of Houston reached a pitiful milestone this past week: For the first time, it surpassed Los Angeles as the American city with the most dangerous smog. So far in 1999, the top 24 readings of

Study finds ill effects of gene-altered crops. But its publication is highly criticised : a

In a striking demonstration of the reach of a new anti-cancer technique, scientists have developed a strain of mouse that is immune to certain types cancer, surviving injections of malignant cells

About 30 years ago, a group of economists at the College of Mexico saw some grim hand-writing on the wall. If trends continued, Mexico's population would nearly triple from 51 million to 148 million

On Sept. 23, nearly three weeks after Mayor Rudolph Giuliani announced that New York was being attacked by a mosquito-borne virus often found in the southern United States, senior federal health

A preliminary study of patients in remission from B-cell lymphoma suggests that a vaccine-like approach might help make remissions stick. The disease, a cancer of the lymph glands, can recur after