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Tasmania's top 10 ghost towns
Alien oceans: what lies beneath
Astronomers have found an Earth-like planet orbiting our nearest neighbour, the red dwarf star Proxima Centauri. So any chance that planet may be habitable?
We look back at why the 2000 Sydney Olympics are remembered so fondly.
Aerial view of St Bees Island off the coast of Mackay, Queensland.
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Submit your best short videos of Australian nature, wildlife, people and places
Watch the full 10-part documentary series
Dr Karl investigates the growing global trend of heat waves, which have killed more Australians than all other natural disasters combined.
Big blue needs you!
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You might think that circumnavigating the Mediterranean would be a relatively easy adventure. Think row boat, think four-metre waves, think Force 7-8 winds and think again.
There’s something magical about the Shoalhaven region – and it runs deeper than the pristine waters and unspoilt wilderness.