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Effect of ‘eddy killing’ in oceans is no longer a matter of guesswork

Satellite data show areas of the oceans where "eddy killing" results in net loss of kinetic energy.  Credit: Courtesy of Hussein Aluie

Scientists document a loss equivalent to detonating a Hiroshima nuclear bomb

Ocean currents, propelled by kinetic energy from the wind, are the great moderators of the Earth's climate. By transferring heat from the equator to polar regions, they help make our planet habitable.

And yet, the large-scale models used by scientists to study this complex system fail to accurately account for the impact of wind on the ocean's most energetic components: swirling, mesoscale eddies. These circular currents of water 50 to 500 kilometers in size are critical to determining the trajectory of larger ocean currents like the Gulf Stream.

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String Theory Explained

Enter the Multiverse

If you think of the most perplexing ideas in the world, for sure at one point, you will arrive before the string theory. Well, six additional dimensions, no particles, but strings, a multiverse. It will soon end up with a headache. But don't get desperate. Here you can enjoy one popular and yet quite an exhaustive introduction to the world of string theory. Take a look at the beautiful presentation of the Dutch theoretical physicist and string theorist - Robbert Dijkgraaf.

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The Secret Troves of Etymology

Credit: Pexels by Rodolfo Clix

Etymology of the word Electricity

Have you ever wondered, which are the origins of the word Electricity? Is it coined especially for its modern usage? Had it been applied for other meanings in the past, as is the case with many other terms? My experience with searching the meaning and origins of words shows that the more common and used is a word in everyday conversations, the less we ask questions about it. As a result, we could easily find ourselves in the paradoxical situation of not knowing the real meaning of words we use on regular basis. And even more, a situation, in which most of the other people we are speaking to, don't know it too, though they, more or less, understand what we mean. So, let us dive once again into the puzzling world of language and its organic development through the years.


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What is the biggest menace for the world today?

Space weather modeling framework simulation of the September 10, 2014, coronal mass ejection Credit: Gabor Tot

Protecting Earth from space storms

"There are only two natural disasters that could impact the entire U.S.," according to scientist Gabor Toth of the University of Michigan. "One is a pandemic, and the other is an extreme space weather event."

The U.S. is currently seeing the effects of the first in real-time. The last major space weather event struck Earth in 1859. Smaller, but still significant, space weather events occur regularly. They fry electronics and power grids, disrupt global positioning systems, cause shifts in the range of the aurora borealis, and raise the risk of radiation to astronauts or passengers on planes crossing over the poles.

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Can 100% renewable energy power the world?

Credit: Pexels by Athena

Renewable energy - reality or dream

Have you ever wanted to know if it is possible to supply the power that the world needs only with renewable energy sources? Well, then you can spend 5 minutes watching this animated video and get the answer to this urgent question.

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