President Trump says his administration has entered a sweeping agreement with Venezuela that could give the U.S. access to vast amounts of the South American country's untapped oil reserves, at cost.
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The deadly flooding that struck Nepal this week is not the first disaster that people in the region have endured. The country's unique geography makes it especially prone to natural disasters.
King Harald V of Norway, who went into exile in the United States as a child during the Nazi occupation of his homeland and refused a string of European noblewomen to marry his school sweetheart, died Friday.
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The announcement that the three countries will go ahead with a trilateral military drill comes a day after North Korea vowed to retaliate against what it called U.S. hostilities.
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Transmitting data through the air often comes with a key problem: under a barrage of turbulent atmospheric conditions like wind and heat, the data can become distorted and corrupted, requiring great effort to piece it back together. It’s a big obstacle for long-distance internet and communications providers, yet a team of researchers think they’ve just solved this puzzle — and it could have massive implications for how you send data to and from your devices.
Researchers from Wits University in South Africa and the University of Bordeaux in France conducted an experiment that involved shooting a beam of light through the air. The light was encoded with optical data, and when they recovered it at the destination site, they found it had arrived with over 98% fidelity, only dropping to 86% fidelity in “the most severe conditions tested.”
How did they do it? According to a paper the team published in the journal Science Advances, the data was encoded into magnetic structures within light called skyrmions. These acted as a form of protective shielding that enabled the data to travel with the light, all without being altered by the surrounding environment.
It worked because the data was encoded into the light’s topological profile. Professor Andrew Forbes, Head of the Structured Light Lab in the Wits School of Physics, likened it to the comparison between a donut and a coffee mug: they both contain a round hole, and this factor remains constant if you reshape one into the other. In the same way, the light could be warped by heat and noise without garbling the data it was carrying.
This test wasn’t limited to short distances — the beam of light involved was transmitted over hundreds of meters, with plenty of heat, noise and wind present at the time. That means it therefore has a degree of applicability to real-world conditions.
Open air data transmissions have previously had to include constant real-time monitoring and correction of distortion, but if this latest research becomes usable on a wider basis, that might not be necessary for much longer. This technique could drastically reduce both the difficulty and cost involved in this kind of communication and has particular utility for space missions, where infrastructure like fiber-optic cabling is clearly not feasible.
High-speed satellite communications and quantum computing could also benefit from this technical advancement. And on a more prosaic level, it could improve communications without needing to build out costly fiber-optic networks. Think high-speed internet being beamed from the sky Starlink-style to rural communities that have long been underserved by traditional carrier systems.
“We envision that our results will pave the way towards seeing and transporting information through distortion by harnessing light’s innate, invariant properties for fast, reliable, and efficient communication,” the researchers concluded.
Andy Thapa is a charter and rescue pilot for a Nepali helicopter company. He's been rescuing people stranded by the catastrophic flooding, and carrying them to safety.
At least 1,500 people are missing, many of them foreign tourists, after deadly floods hit the Nepal-Tibet border, sweeping away entire villages
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