2 sperm whales die within one week in Florida Keys

A sperm whale calf died after beaching itself in the northern Florida Keys last week. Six days later, an emaciated adult whale was found beached near Key West. A necropsy determined the calf likely died after becoming separated from its mother.

Cleaner air leads to more hurricanes in the Atlantic, study finds

A new study links how many hurricanes form worldwide to air pollution levels. Wednesday's study from the National Oceanic and Atmospheric Administration says cleaner air in Europe and the United States is helping trigger a dramatic increase in the number of Atlantic hurricanes.