Warm water holds less oxygen than cold water, because the higher the temperature, the less soluble oxygen becomes. Warm surface layers in the ocean prevent oxygen from mixing deeper into the ocean.

New research suggests it is unlikely NASA’s plans to obtain samples from Enceladus' liquid oceans will provide clear evidence ...

When ocean currents flow around the planet, they move warm and cold water with them, changing the climate and weather as they go. For example, Britain would actually be much colder if it wasn’t ...

But Richard Seager, from the Lamont-Doherty Earth Observatory at Columbia University, said one factor appears to be trade winds in the region, which carry warm water ... cold seas of the Southern ...