Energy & Green Tech

Ammonia-fueled marine engine cuts CO₂ emissions by 50%

MW-class marine engine combustion technology that uses ammonia—a future renewable energy source—as fuel will be applied on-site for the first time in Korea. A ship engine fueled by ammonia is expected to accelerate its ...

Robotics

New energy source powers subsea robots indefinitely

When it comes to mapping new territory, NASA's record swamps Lewis and Clark's. And the space agency doesn't only chart other stars and planets—a vantage point from space also allows a great view of Earth. Now a recent ...

Engineering

New, electricity-free desalination method shows promise

Researchers from The Australian National University have proposed a new method for desalinating water that avoids many of the unwanted side effects of traditional desalinating techniques and that reduces the energy required ...

Internet

Undersea cables are the unseen backbone of the global internet

Have you ever wondered how an email sent from New York arrives in Sydney in mere seconds, or how you can video chat with someone on the other side of the globe with barely a hint of delay? Behind these everyday miracles lies ...

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Ocean

An ocean (from Greek Ωκεανός, Okeanos (Oceanus)) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 meters (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt.

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