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Ocean

Environment

Acidic oceans triggered mass extinction over 250 million years ago

In order to better understand how climate change will unfold over the coming decades, some scientists are looking to the remote past and specific climatic catastrophes to help shed light the so-called Anthropocene and its consequences for life on Earth. Recently, researchers at the University of Utah looked into the so-called Paleocene-Eocene thermal maximum for clues. Now, a study by the University of Edinburgh highlights evidence that the rapid acidification of oceans 252 million years ago caused the greatest extinction of all time. Read More

Space

Mars may have had more water than the Arctic Ocean

In Edgar Rice Burroughs's Barsoom novels, Earthman John Carter's adventures took place on the dry beds of Mar's ancient oceans. Now NASA scientist's say that may not be so far fetched. Though they haven't found signs of any thoats, they have estimated that Mars may once have had enough water to form a vast ocean surrounding its north pole of which only plains remain.Read More

Brainless but not directionless, jellyfish swim against the current

For many people, jellyfish are just an unwelcome addition to a day at the beach. But the gelatinous creatures can seriously affect commercial fishing ventures and even cause the shutdown of power stations when they form into giant "blooms" in the ocean. Researchers at Deakin University in Australia, might be on the way to a solution. Read More

Biology

Robot sub beats nets for discovering what lurks at the bottom of the sea

Curious about what's living on the deep sea floor? Well, the Autosub6000 AUV (autonomous underwater vehicle) is helping us find out. Led by Dr. Kirsty Morris, a team at the UK's National Oceanography Centre (NOC) has equipped one of the unmanned submarines with a high-resolution photographic system. As a result, it's claimed to be far more effective at identifying deep-sea life than the usual approach of scientific trawling. Read More

Drones

Autonomous underwater vehicle looks for algae on underside of ice

Early every spring in Antarctica, mats of algae form on the underside of the sea ice. These mats – along with bacteria that live in them – serve as a food source for zooplankton, essentially kickstarting the food chain for the year. Given that the ice algae plays such an important ecological role, scientists from Denmark's Aarhus University have set out to better understand its distribution. In order to do so, they're using a high-tech underwater drone. Read More

Science

Study finds early warning signals of global ocean conveyor belt collapse

We could see early warning signs of the collapse of a key component of the global climate up to 250 years in advance, a new study has shown – ample time to either prevent or prepare for the consequences of abrupt climate change. The University of Exeter study analyzed the Atlantic Meridional Overturning Circulation (AMOC), sometimes referred to as the global ocean conveyor belt, in a highly-complex and realistic simulation model, and identified the likely mechanisms that would drive such a collapse.Read More

Marine

Ocean gliding robots used to study melting Antarctic sheet ice

The use of "ocean gliders" for conducting research in oceanic conditions not ideal for regular methods has been catching on in the scientific community. Examples of this have been seen in the detection of endangered whales in the North Atlantic and a study of the Atlantic sturgeon. Researchers have now turned their robotic ocean helpers towards Antarctica, to study the rapidly-melting ice sheets on the coast of the western part of that polar land mass. Read More

Marine

Rower prepares to cross the Atlantic in futuristic boat

Like many fathers with young children, experienced rower Andras Bakos is concerned about what sort of shape the environment will be in by the time his son grows up. That's why in 2011, he began planning a trans-Atlantic rowing expedition to raise awareness of environmental issues. The boat that he had custom-built for the trip is now ready to go, and it looks like it could just as well be used for rowing to Mars.Read More

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