Hikers in New Zealand risk polluting the “clearest lake in the world” with a microscopic alga carried on their boots.

High chance of showers about the Blue Mountains, medium chance elsewhere. The chance of a thunderstorm in the north in the morning and afternoon. Winds easterly 20 to 30 km/h. Overnight temperatures ...

For more information about bushfires visit the NSW Rural Fire Service at http://www.rfs.nsw.gov.au NSW Fire Weather Districts differ from Weather Forecast Districts ...