Protecting marine areas may have insidious political effects

Zones of ocean known as Marine Protected Areas (MPAs) are all the rage. They have no single or agreed definition, but essentially they are areas of sea in which human activity is restricted or prohibited in order to preserve ...

Double trouble for a coral reef

Upolu, one of the nine islands of Samoa, in the Pacific Ocean. Well-known among fans of diving, this isolated coral reef promised to be a site of rich biodiversity for the scientists on the Tara Pacific expedition, principally ...

Image: Henderson Island

Henderson Island lies in the South Pacific, about halfway between New Zealand and Chile. As one of the best examples of a coral atoll, Henderson Island is a UN World Heritage site and one of the world's biggest marine reserves. ...

Swarm tracks elusive ocean magnetism

The magnetic field is arguably one of the most mysterious features of our planet. ESA's Swarm mission is continually yielding more insight into how our protective shield is generated, how it behaves and how it is changing. ...

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