from the world's big
A Cheap Way to Levitate
Doug Malewicki: When you pass a magnet over a wire, it induces a current in that wire. If you run alternately, if you run a current through a wire, it creates an electromagnetic field. So, if you have a whole bunch of coils and you start passing some magnets over them, which are on this vehicle. And you design this all correctly; it will actually start lifting the vehicle off. There’s a repulsion, and it’s stable. So, now what happens, if you lose the power to propel the vehicle, you do not lose the magnetic levitation, the passive magnetic levitation. So, it’s super safe.
With seven pounds of lithium polymer backup batteries in our vehicles, say we’re going 100 mph, and we lose all grid power, we can still go three miles and we should have stations every mile apart. So, there’s a big safety factor with passive MagLev. And again, there’s always had to be some kind of MagLev because we do not want all the maintenance costs associated with gears and little tires wearing out and we want the high-speed capability.
Question: How does the Sky Tran system compare with the MagLev train?
Doug Malewicki: Like the Trans Rapid MagLev train that I think goes, what I think 300 mph in Beijing for a short distance. The first one. If they lose power, they lose their levitation. You would come to a screeching halt. They have to have all kinds of computer, uninterrupted backup power supplies and things so that never happens. And you can design that. However, that is a huge train, a very expensive – just ridiculously expensive – pretty fast and very high maintenance that because their MagLev is so critical intolerance, they have to keep that track super aligned properly. Where ours is very tolerant and our vehicles are small, so everything is cheap in comparison. A lot less expensive. That thing probably weights a million pounds and our little vehicles at gross weight weights 750 pounds. It’s just that we have a continuous stream of vehicles and they have the one big vehicle. So, they are flying; if you want to call it flying, every what, half hour? In our case, if they’re going 300 mph, in our case you’d get there, boom, you’d be on board and going. So, you’d probably get there just as quick going 150 mph if we put it side-by-side with the Beijing’s Trans Rapid System.
Question: How does Sky Tran compare to a light rail system?
Doug Malewicki: Sky Tran is a much cheaper option compared to light rail because we’re lighter, smaller, and faster. We can move more people an hour, use a lot less energy, a lot less, or no land, basically. We can pop Sky Tran onto sidewalks where they have to – there 60-70 million a mile, a lot of that is just buying up land, valuable land. We don’t need to do that. We just need a two-foot post every so many feet to build our system and we can attach it to buildings. That’s the advantage of going small. And they can carry so many people, but even if they’re coming by once very five minutes, or once every three minutes, once you have a continuous system with convenient stations everywhere, you can carry a lot more people per hour.
It’s very close to the automobile. Why have we started loving the automobile? Because we can get places faster, cheaper, more conveniently. Unfortunately, the fossil fuels – everyone is starting hating the fossil fuels. It’s just like back in the original days of this country, the Jamestown Colony was ready to go back to England, and then all of a sudden they got a product that people would buy. Guess what that was? Tobacco. And now tobacco is an evil product and fossil fuels are going that same way. And that was the second product that really made this country; World War II and everything, and all the technology based on fossil fuels. But now we’re becoming more and more aware of all the total disadvantages of it and it’s getting to be like an evil thing. It isn’t, but we will, with our little brains, figure out how to get around it. And Sky Tran is one good way to do that.
Doug Malewicki’s Sky Tran invention is less expensive than a light rail system and incorporates many of the characteristics of the MagLev train.
Sallie Krawcheck and Bob Kulhan will be talking money, jobs, and how the pandemic will disproportionally affect women's finances.
Health officials in China reported that a man was infected with bubonic plague, the infectious disease that caused the Black Death.
- The case was reported in the city of Bayannur, which has issued a level-three plague prevention warning.
- Modern antibiotics can effectively treat bubonic plague, which spreads mainly by fleas.
- Chinese health officials are also monitoring a newly discovered type of swine flu that has the potential to develop into a pandemic virus.
Bacteria under microscope
needpix.com<p>Today, bubonic plague can be treated effectively with antibiotics.</p><p style="margin-left: 20px;">"Unlike in the 14th century, we now have an understanding of how this disease is transmitted," Dr. Shanthi Kappagoda, an infectious disease physician at Stanford Health Care, told <a href="https://www.healthline.com/health-news/seriously-dont-worry-about-the-plague#Heres-how-the-plague-spreads" target="_blank">Healthline</a>. "We know how to prevent it — avoid handling sick or dead animals in areas where there is transmission. We are also able to treat patients who are infected with effective antibiotics, and can give antibiotics to people who may have been exposed to the bacteria [and] prevent them [from] getting sick."</p>
This plague patient is displaying a swollen, ruptured inguinal lymph node, or buboe.
Centers for Disease Control and Prevention<p>Still, hundreds of people develop bubonic plague every year. In the U.S., a handful of cases occur annually, particularly in New Mexico, Arizona and Colorado, <a href="https://www.cdc.gov/plague/faq/index.html" target="_blank">where habitats allow the bacteria to spread more easily among wild rodent populations</a>. But these cases are very rare, mainly because you need to be in close contact with rodents in order to get infected. And though plague can spread from human to human, this <a href="https://www.healthline.com/health-news/seriously-dont-worry-about-the-plague#Heres-how-the-plague-spreads" target="_blank">only occurs with pneumonic plague</a>, and transmission is also rare.</p>
A new swine flu in China<p>Last week, researchers in China also reported another public health concern: a new virus that has "all the essential hallmarks" of a pandemic virus.<br></p><p>In a paper published in the <a href="https://www.pnas.org/content/early/2020/06/23/1921186117" target="_blank">Proceedings of the National Academy of Sciences</a>, researchers say the virus was discovered in pigs in China, and it descended from the H1N1 virus, commonly called "swine flu." That virus was able to transmit from human to human, and it killed an estimated 151,700 to 575,400 people worldwide from 2009 to 2010, according to the Centers for Disease Control and Prevention.</p>There's no evidence showing that the new virus can spread from person to person. But the researchers did find that 10 percent of swine workers had been infected by the virus, called G4 reassortant EA H1N1. This level of infectivity raises concerns, because it "greatly enhances the opportunity for virus adaptation in humans and raises concerns for the possible generation of pandemic viruses," the researchers wrote.
The word "learning" opens up space for more people, places, and ideas.
- The terms 'education' and 'learning' are often used interchangeably, but there is a cultural connotation to the former that can be limiting. Education naturally links to schooling, which is only one form of learning.
- Gregg Behr, founder and co-chair of Remake Learning, believes that this small word shift opens up the possibilities in terms of how and where learning can happen. It also becomes a more inclusive practice, welcoming in a larger, more diverse group of thinkers.
- Post-COVID, the way we think about what learning looks like will inevitably change, so it's crucial to adjust and begin building the necessary support systems today.
Scientists uncovered the secrets of what drove some of the world's last remaining woolly mammoths to extinction.
Every summer, children on the Alaskan island of St Paul cool down in Lake Hill, a crater lake in an extinct volcano – unaware of the mysteries that lie beneath.
The coronavirus pandemic has brought out the perception of selfishness among many.
- Selfish behavior has been analyzed by philosophers and psychologists for centuries.
- New research shows people may be wired for altruistic behavior and get more benefits from it.
- Times of crisis tend to increase self-centered acts.