flue

While renewable energy sources are already reducing the need for CO2-emitting, fossil fuel-burning power plants, industrial plants that make intense use of fossil fuels are harder to make sustainable, so flue gas capture is essential.

The home’s boiler was serviced in July this year, a flue was replaced, and it passed checks, the BBC understands.

California health officials are investigating a possible case of H5N1 bird flue infection in a person who had contact with dairy cows in the Central Valley.

Furthermore, the presence of oxygen impurities in flue gas results in undesired side reactions, which significantly reduces the efficiency of the CO2 reduction process.

The school's principal, David Scales, said checks included looking at driveways, boiler flues and lights.