The original story of Saint George and the Dragon dates back to the 7th century, the narrative maintaining that in a fictitious town in Libya there lived a king who chose to appease the evil dragon in the town’s lake that was poisoning the countryside. With the agreement of his subjects, the appeasement involved feeding the dragon two sheep every day. But when there were no more sheep, the King’s subjects started feeding their children to the dragon, chosen by lottery.
When one of the lots fell on the king’s daughter, he told the people they could have all his gold and silver and half his kingdom if his daughter were spared, but the people refused. As his daughter walked to the lake to be fed to the dragon, fate intervened—Saint George happened to be riding by.
In graduate school, I memorized material that would likely appear on examinations, and forgot it after taking them, a practice that got me through required courses, but did little to enhance my goal of leaving the university with a well-rounded education.
As a college teacher I don’t want students to cram material into their heads for the sake of passing tests as I did, and mindful that experience is the best teacher, I assign exercises that provide them opportunities to utilize, and therefore retain, learned material.
Lithium-ion batteries have become essential in everyday technology. But these power sources can explode under certain circumstances and are not ideal for grid-scale energy storage. Sodium-ion batteries are potentially a safer and less expensive alternative, but current versions don’t last long enough yet for practical use. Now, scientists have developed an anode material that enables sodium-ion batteries to perform at high capacity over hundreds of cycles, according to their report in the journal ACS Nano.
For years, scientists have considered sodium-ion batteries a safer and lower-cost candidate for large-scale energy storage than lithium-ion. But so far, sodium-ion batteries have not operated at high capacity for long-term use. Lithium and sodium have similar properties in many ways, but sodium ions are much larger than lithium ions. This size difference leads to the rapid deterioration of a key battery component. Meilin Liu, Chenghao Yang and colleagues wanted to find an anode material that would give sodium-ion batteries a longer life.—More…
Aetna pulled out of most of the exchanges last year. Humana has announced that it will leave the exchanges at the end of the year. Aetna’s CEO is talking death spiral. And the IRS will no longer care about your health insurance.
The term "virtual reality" has been around for years, and for about the same length of time we’ve been promised that it’s the next big thing we’ll have in our lives.
Like so many technological promises, however, it’s been mostly vapourware when it comes to consumer products, with only a few baby steps taken on the journey to immersive virtual worlds for us to play in. But it appears to be coming, and if a couple of demonstrations I attended over the past couple of months are any indication, there should be some really cool stuff available over the next few years.
I can also see such technology being very handy when it comes to training (why read a dry textbook or suffer through an insufferable lecturer when you can "experience" something first hand?) and in other applications.
In the media world, the Daily Mail, which crosses an ocean, can make or break public figures of the day.
Currently, the Daily Mail is trying to make Canada’s Prime Minister Justin Trudeau, the indisputable ‘Heartthrob of World Leaders’, someone capable of evoking the most intense and long lasting school girl crushes, and one who can mesmerize Ivanka Trump and Angela Merkel on the same day.
We told you in September that the public’s trust in the news media is at an all-time low of 31 percent, according to a Gallup poll. I suspect that if you took another one today it would be even lower. And while it may be true that Donald Trump has had something to do with that, it’s only because he’s brought out the fullness of the behavior that proves just how untrustworthy they are.
And from our parent, Capital Research Center: This article is part of the Organization Trendsseries.
At the time of this writing, prosecutors had just dropped charges against the last three of six police officers accused in the death of Baltimore drug dealer Freddie Gray. The decision closes an ugly chapter in that sad story, in which the highly politicized Baltimore City state’s attorney, Marilyn Mosby, accused them of murder. The city descended into days of violence and destruction after Mayor Stephanie Rawlings-Blake infamously gave space to rioters “who wished to destroy. But that riot was only one chapter in a still-evolving story of death and destruction provoked by a false narrative of oppression and police brutality.
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