Hidden in the Pacific, two very different volcanoes are forcing scientists to rethink what counts as “biggest.” Tamu Massif, ...

Forget Angel Falls; the world's largest waterfall is an invisible underwater giant. The Denmark Strait cataract, between Greenland and Iceland, plunges 3,500 meters, dwarfing land-based falls. This ...

Vice-Admiral Angus Topshee pushes faster, deadlier upgrades amid global instability.

We opened a window into our country’s biodiversity only to find there are so many more windows left to be opened.” ...

Marles discussed AUKUS at length with 7NEWS podcast The Issue, just as he prepared to travel for his latest round of foreign engagements, at the Munich Security Conference. “So this is a big thing ...

His derring-do and unusual lung capacity led him to make record-breaking dives of more than 200 feet into the Atlantic without wearing a scuba tank or fins.

The U.S. Navy’s newest supercarrier is heading back towards the Middle East having already been recalled across the Atlantic to station off Venezuela. Already in its eighth month at sea, this new ...

The giant salamanders of the Far East are by far the biggest amphibians in the world - but which one is king of all?