Positive trial results show ultrasound energy can treat high blood pressure

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A procedure called renal denervation resulted in medication-free blood pressure control in over a third of trial patients

A promising new study is documenting the long-term effects of a novel surgical procedure using ultrasound to reduce blood pressure in patients with hypertension. It’s hoped the one-off procedure, called renal denervation, could offer patients an alternative option to taking hypertension drugs.

Renal denervation has been in development for almost a decade, however inconsistent clinical trial results have slowed the progress of this novel surgical procedure. The treatment involves delivering ultrasound pulses to nerves in the walls of renal arteries. This procedure has been found to reduce blood pressure, particularly in cases where hypertension has not effectively responded to traditional medications.

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Near-perfect performance in low-cost semiconductors

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Researchers redefine what it means for low-cost semiconductors, called quantum dots, to be near-perfect and find that quantum dots meet quality standards set by more expensive alternatives.

Tiny, easy-to-produce particles, called quantum dots, may soon take the place of more expensive single crystal semiconductors in advanced electronics found in solar panels, camera sensors and medical imaging tools. Although quantum dots have begun to break into the consumer market — in the form of quantum dot TVs — they have been hampered by long-standing uncertainties about their quality. Now, a new measurement technique developed by researchers at Stanford University may finally dissolve those doubts.

“Traditional semiconductors are single crystals, grown in vacuum under special conditions. These we can make in large numbers, in flask, in a lab and we’ve shown they are as good as the best single crystals,” said David Hanifi, graduate student in chemistry at Stanford and co-lead author of the paper written about this work, published March 15 in Science.

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Switzerland has a stunningly high rate of gun ownership — here’s why it doesn’t have mass shootings

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Switzerland Swiss army honor guard soldiers troops military

Switzerland hasn’t had a mass shooting since 2001, when a man stormed the local parliament in Zug, killing 14 people and then himself.

The country has about 2 million privately owned guns in a nation of 8.3 million people. In 2016, the country had 47 attempted homicides with firearms. The country’s overall murder rate is near zero.

The National Rifle Association often points to Switzerland to argue that more rules on gun ownership aren’t necessary. In 2016, the NRA said on its blog that the European country had one of the lowest murder rates in the world while still having millions of privately owned guns and a few hunting weapons that don’t even require a permit.

But the Swiss have some specific rules and regulations for gun use.

Business Insider took a look at the country’s past with guns to see why it has lower rates of gun violence than the US, where gun death rates are now at their highest in more than 20 years.

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Flat Earthers now plan to “shut this debate down” by getting to the “outer edges of Earth

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After their last experiment went pear-shaped, Flat Earth supporters have announced an expedition to the “outer edges of flat earth” in order to “shut this debate down” once and for all.

An extremely in-depth report in Forbes saw journalist Jim Dobson speak to “dozens” of believers, one of whom – Jay Decasby – is in talks to develop his own reality TV series about his theory.

Decasby is also throwing his weight behind plan to sail to Antarctica to prove flat earth.

“All we have to do is shut this debate down once and for all is to get the distance of the coast of Antarctica,” he told Forbes.

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Scientists just found a new way to make fuel from seawater

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Could this help reignite hydrogen as a renewable fuel?

Though hydrogen fuel eliminates tailpipe pollution, most hydrogen fuel is made from natural gas, a fossil fuel. It is possible to make it from a cleaner source: water. With electrodes in water, electricity can split the hydrogen from oxygen, giving you pure hydrogen. But until now, the processes have relied on purified freshwater, which is expensive. For the use of hydrogen fuel to scale up, we need a different source, one that’s cheaper and doesn’t use up water we could be drinking instead.

Now new research from Stanford scientists demonstrates a new method for making hydrogen fuel directly from ocean water. “Right now, the need for hydrogen is still relatively limited because the so-called hydrogen economy hasn’t taken off yet, although it’s in its early growing stage,” says Hongjie Dai, a chemistry professor at Stanford and coauthor of a new paper about the research. “You could imagine there would be more demand for hydrogen.”

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Earth’s magnetic north pole has officially moved

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This map shows the new location of the magnetic North Pole (the white star). NOAA NCEI/CIRES

Earth’s magnetic North Pole has drifted so fast that authorities have had to officially redefine the location of the magnetic North Pole. The extreme wandering of the North Pole caused increasing concerns over navigation, especially in high latitudes.

Earth’s magnetic field is known to have wandered and flipped in the geologic past. Earth’s magnetic field is a result of spinning molten iron and nickel 1,800 miles below the surface. As the constant flow of molten metals in the outer core changes over time, it alters the external magnetic field.

What we’ve seen in the past hundred years is that the location of the magnetic North Pole has moved northward. That migration of the magnetic North Pole was switched into overdrive in the past few years, causing the pole to rapidly move. The increased speed with which the magnetic North Pole has moved prompted authorities to officially update its location. The official location of the magnetic poles is specified by the World Magnetic Model, which acts as the basis for navigation, communication, GPS, etc. around the globe.

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Defining generations: Where Millennials end and Generation Z begins

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Michael Dimock, president of Pew Research Center

For decades, Pew Research Center has been committed to measuring public attitudes on key issues and documenting differences in those attitudes across demographic groups. One lens often employed by researchers at the Center to understand these differences is that of generation.

Generations provide the opportunity to look at Americans both by their place in the life cycle – whether a young adult, a middle-aged parent or a retiree – and by their membership in a cohort of individuals who were born at a similar time.

As we’ve examined in past work, generational cohorts give researchers a tool to analyze changes in views over time. They can provide a way to understand how different formative experiences (such as world events and technological, economic and social shifts) interact with the life-cycle and aging process to shape people’s views of the world. While younger and older adults may differ in their views at a given moment, generational cohorts allow researchers to examine how today’s older adults felt about a given issue when they themselves were young, as well as to describe how the trajectory of views might differ across generations.

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Cruise line proposes 60,000 passenger cruise ship nearly one mile long

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Think cruise ships are big now? A cruise line has proposed a new ship that will carry 60,000 passengers and will be nearly one mile long.

Freedom Cruise Line International is proposing the largest vessel in maritime history. It will be 4,500 feet long, as wide as 2 1/2 football fields, and 350 feet high. The ship will be the first mobile City at Sea and carry the name Freedom Ship. The cost to build Freedom Ship? $11 Billion.

The 20+ story superstructure would contain condominium housing for 60,000, a hospital, schools, hotel, casino, duty free shopping, and commercial and office occupancies.

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Driverless cars ‘don’t make business sense’

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The Waymo car (above), formerly the Google self-driving car project, at the Las Vegas Convention Center during the annual trade show CES earlier this year. Companies such as Google and Uber have spent billions of dollars developing driverless vehicles.

 

Developing fully autonomous cars will take another five years and is an expensive undertaking with no clear returns, says Volkswagen’s head of commercial vehicles.

GENEVA • Fully autonomous vehicles will take at least another five years to perfect, with the cost and complexity of rolling out the technology globally serving to undermine the business case, Volkswagen’s head of commercial vehicles said.

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The inventor of Jelly Belly has launched cannabis-infused jelly beans

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David Klein, the inventor of the Jelly Belly. AP Photo/Jae C. Hong

Jelly Belly’s inventor, David Klein, is getting into the cannabis business.

Klein recently launched a business called Spectrum Confections that makes jelly beans infused with cannabidiol, or CBD, the non-psychoactive component of marijuana.

While Jelly Belly is not connected to the venture, cannabis-infused candies are on the cusp of transforming the confectionary business.

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Artificial Intelligence and the future of humans

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 A vehicle and person recognition system for use by law enforcement is demonstrated at last year’s GPU Technology Conference in Washington, D.C., which highlights new uses for artificial intelligence and deep learning.

Experts say the rise of artificial intelligence will make most people better off over the next decade, but many have concerns about how advances in AI will affect what it means to be human, to be productive and to exercise free will.

Digital life is augmenting human capacities and disrupting eons-old human activities. Code-driven systems have spread to more than half of the world’s inhabitants in ambient information and connectivity, offering previously unimagined opportunities and unprecedented threats. As emerging algorithm-driven artificial intelligence (AI) continues to spread, will people be better off than they are today?

Some 979 technology pioneers, innovators, developers, business and policy leaders, researchers and activists answered this question in a canvassing of experts conducted in the summer of 2018.

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