First animals oxygenated the ocean, study suggests

The evolution of the first animals may have oxygenated the earth's oceans – contrary to the traditional view that a rise in oxygen triggered their development. New research led by the University of Exeter contests the long held belief that oxygenation of the atmosphere and oceans was a pre-requisite for the evolution of complex life forms.

How much life is on Earth?

The total mass of all life on Earth is about one third less than thought, a new analysis has indicated.

Nuclear power could come from the oceans

Nuclear reactors could soon be fueled with uranium harvested from the ocean, thanks to a new material.

Seeding oceans with iron could help limit global warming


A team of German researchers believe stimulating the growth of algae in our oceans may offer a viable method of removing excess carbon dioxide from the atmosphere.

Ocean salinity shows water cycle is accelerating

Dry places are getting drier and wet ones wetter, say scientists, as the global rainfall and evaporation cycle accelerates.

Ocean acidification worst for 300 million years

The world's oceans appear to be acidifying faster than at any time in the last 300 million years, and sea life may well be unable to adapt.

More evidence found for ancient Martian ocean

ESA says its Mars Express probe has returned some of the strongest evidence yet that an ocean once covered part of Mars.

Carbon dioxide in oceans gives fish a deathwish

The increasing amount of dissolved carbon dioxide oceans is driving fish crazy, Australian researchers say.

Washing machines spew plastic into the oceans

The oceans and their beaches are now home to vast numbers of tiny pieces of plastic - and the source may be your washing machine, researchers say.

Robot fleets set to survey the oceans

Swarms of spherical robots equipped with biogeochemical sensors could soon be cruising the oceans on study missions.

Planet-forming disk could create thousands of oceans

Astronomers have discovered an embryonic solar system surrounded by a cloud of water vapor that could eventually form comets and deliver oceans to dry worlds.

Chatting bacteria hike atmospheric CO2

Bacteria in the ocean are communicating and cooperating in a phenomenon which could be having a significant impact on the planet's climate.

Comets created Earth's oceans

Earth's oceans could once have been giant icebergs floating through space, an ESA team has concluded, after examining the isotopic composition of a comet.

Mystery deepens over ice age rise in CO2

The large increase in atmospheric carbon dioxide at the end of the last ice age wasn't released by the oceans, scientists have concluded.

Deep oceans store heat from global warming - for a while

The deep oceans can absorb enough heat to mask the effect of global warming for a decade at a time, say scientists at the National Center for Atmospheric Research (NCAR).

Oceans becoming less effective carbon sinks

A new analysis of the oceans' ability to absorb carbon has concluded that climate change is hampering their ability to act as a carbon sink.

Foundation of ocean food chain in decline

The tiny algae known as phytoplankton - which form the basis of the entire marine food chain - have been disappearing globally over the last hundred years.

Electrolux aims to clean up the oceans (a little bit)

Elextrolux is attempting to bolster its green credentials by hauling a team on a global journey - to save six vacuum cleaners' worth of plastic.

CO2 'burp' may have ended last ice age

Scientists think they've found the source of a huge carbon dioxide 'burp' which helped to end the last ice age 18,000 years ago.