GLIWICE, Poland (Reuters) — Engineers from the Silesian University of Technology in Gliwice are testing a cost-effective electrostatic precipitator for households which use coal or other polluting fuels for heating. The system developed by the scientists can be mounted directly onto the chimney of a house or apartment building and uses electrostatic charges to stop dust particles. Dust carrying pollutants are deposited on the precipitator walls and does not escape alongside the smoke into the […]