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Weather for the week ahead
Cold easterly winds brought some of us our first snow of the season on Wednesday. But is the cold weather set to stick around? Darren Bett has the details.
Giant dust storm sweeps across Australia
The storm turns skies orange and prompts health warnings, before delaying flights in Sydney.
Greenhouse gas levels at new record high
The gases that are driving up temperatures reached a new high in 2017 with no sign of a reversal in the trend.
What is wind chill?
Why does a chilly day feel so much colder when the wind is blowing?
How much do you know about frost?
How many kinds of frost can you name and why are there different types of frost?