A new state permit authorizes the town of Franklin to drop a mixture of aluminum sulfate and sodium aluminate into Lake Carmi this fall.

This summer, you might notice more people using a gadget to fight the heat: a horseshoe-shaped fan that sits on your neck and blows air. But can a neck cooling fan really help you?

For years, researchers have been trying to shut down a mosquito's ability to transmit certain diseases. Brazil is making a massive investment in the effort, aimed at throttling dengue levels.