Craig Stevens, University of Auckland, Waipapa Taumata Rau
Ocean warming seems the main driver of Antarctica’s sea-ice loss. But as satellites show, the change is not universal and sea ice persists in East Antarctica and the Weddell Sea.
Evidence from the Pilbara region suggests Earth in its youth behaved very differently to how it does today, and had more water within it than previously thought.
Tharp with an undersea map at her desk. Rolled sonar profiles of the ocean floor are on the shelf behind her.
Lamont-Doherty Earth Observatory and the estate of Marie Tharp
Born on July 30, 1920, geologist and cartographer Tharp changed scientific thinking about what lay at the bottom of the ocean – not a featureless flat, but rugged and varied terrain.
Lord Howe Island is one of the few places where the lost continent of Zealandia is exposed above sea level.
SHUTTERSTOCK
We undertook a 28-day voyage to explore a possible lost continent in a remote part of the Coral Sea, in an area off the coast of Queensland. Here’s what we found.
A map showing Northern Canada and the Arctic Ocean.
Government of Canada