Since the beginning of the Industrial Revolution humans have released ~500 billion metric tons of carbon to the atmosphere through fossil-fuel burning, cement production and land-use changes. About 30% has been taken up by the oceans. The oceanic uptake of carbon dioxide leads to changes in marine carbonate chemistry resulting in a decrease of seawater pH and carbonate ion concentration, commonly referred to as ocean acidification. Ocean acidification is considered a major threat to calcifying organisms.

New research from the University of Missouri indicates that Atlantic Ocean temperatures during the greenhouse climate of the Late Cretaceous Epoch were influenced by circulation in the deep ocean.

Where conservation resources are limited and conservation targets are diverse, robust yet flexible priority-setting frameworks are vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial and temporal scales. Marine turtles are widely distributed and exhibit intra-specific variations in population sizes and trends, as well as reproduction and morphology.

Dust is all that's needed to plunge the world into an ice age. When blown into the sea, the iron it contains can fertilise plankton growth on a scale large enough to cause global temperatures to drop. The finding adds support to the idea of staving off climate change by simulating the effects of dust - perhaps by sprinkling the oceans with iron filings.

The first decade of the 21st century was the hottest since the beginning of the Industrial Revolution. Global warming is real and, if present trends continue, its possible effects worry publics and governments around the world. Could it foster armed conflict for resources such as food and water? Will
Western armies be increasingly called upon to mitigate the effects of natural catastrophes, humanitarian disasters, and floods of refugees?

The Atlantic Ocean receives warm, saline water from the Indo-Pacific Ocean through Agulhas leakage around the southern tip of Africa.

The Arctic is responding more rapidly to global warming than most other areas on our planet. Northward-flowing Atlantic Water is the major means of heat advection toward the Arctic and strongly affects the sea ice distribution. Records of its natural variability are critical for the understanding of feedback mechanisms and the future of the Arctic climate system, but continuous historical records reach back only ~150 years. Here, we present a multidecadal-scale record of ocean temperature variations during the past 2000 years, derived from marine sediments off Western Svalbard (79°N).

The meridional overturning circulation (MOC) of the Atlantic Ocean is considered to be one of the most important components of the climate system.

European nations agreed on Friday to set up fishing-free zones in remote parts of the Atlantic Ocean in the world's first high seas network of protected areas beyond the control of national governments.

Environment ministers from 15 European states, forming the OSPAR group overseeing the North-East Atlantic, said they would seek recognition of the six areas at the United Nations and from the Un

Efforts to clean up and protect the North East Atlantic have made some progress since 2000 but new threats are looming such as ocean acidification linked to climate change, a study said on Thursday.

The report, by the OSPAR Commission that groups 15 European nations and covers an area from the North Pole to the Azores, said there had been advances in reducing oil spills, discharges from nuclear