Tawny crazy ants in Florida number in the millions, asphyxiate their prey and create huge supercolonies that are nearly impossible to eradicate.

A system in the Gulf of America could bring heavy rainfall and flash flooding to portions of Florida as it moves onshore.

At least 58 people in New York City have been diagnosed with Legionnaires’ disease, and two have died. Authorities suspect that the bacteria, Legionella, is being spread by ...