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. ...

Coral reefs in hot water as warming events slow recovery

As the world's oceans heat up with climate change, coral reefs are increasingly under threat. Bleaching events—defense mechanisms against high temperatures that turn corals white—have become more frequent.

New method measures rare traces of a volatile gas

The gas nitrogen monoxide (NO) belongs to the group of nitrogen oxides, infamous as toxic emissions in urban agglomerations. But NO is also produced in nature and plays a role in the nitrogen cycle, which is essential for ...

How a 'shadow zone' traps the world's oldest ocean water

New research from an international team has revealed why the oldest water in the ocean in the North Pacific has remained trapped in a shadow zone around 2km below the sea surface for over 1000 years.

World's corals under threat

The current El Niño weather phenomenon is taking its toll on coral reefs, prompting a field campaign to the middle of the Pacific Ocean to explore how Europe's Sentinel-2 satellite might be able to quantify the damage on ...

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