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the performance of presidents, especially on foreign policy, is shaped by how leaders attach to problems. Some leaders are like dogs: They want to bound right in and make things happen. Some are more like cats: They want to detach and maybe look for a pressure point here or there.

we should be asking them a different set of questions:

How much do you think a president can change the flow of world events? President Obama, for example, has a limited or, if you want to put it that way, realistic view of the extent of American influence. He subscribes to a series of propositions that frequently push him toward nonintervention: The world “is a tough, complicated, messy, mean place and full of hardship and tragedy,” he told Goldberg. You can’t fix everything. Sometimes you can only shine a spotlight.

Benedict XVI and John Paul II focused on restoring dogmatic certainty as the counterpart to papal authority. Francis is arguing that both, if taken too far, can be sirens leading us away from God, not ensuring our orthodoxy but sealing us off in calcified positions and rituals that can come to mean nothing outside themselves

In this quest to seek and find God in all things there is still an area of uncertainty. There must be. If a person says that he met God with total certainty and is not touched by a margin of uncertainty, then this is not good. For me, this is an important key. If one has the answers to all the questions – that is the proof that God is not with him. It means that he is a false prophet using religion for himself. The great leaders of the people of God, like Moses, have always left room for doubt. You must leave room for the Lord, not for our certainties; we must be humble.

If the Christian is a restorationist, a legalist, if he wants everything clear and safe, then he will find nothing. Tradition and memory of the past must help us to have the courage to open up new areas to God.

Texting properly isn’t writing at all — it’s actually more akin to spoken language. And it’s a “spoken” language that is getting richer and more complex by the year.

Over time, writers took advantage of this and started crafting tapeworm sentences such as this one, from The Decline and Fall of the Roman Empire: “The whole engagement lasted above 12 hours, till the gradual retreat of the Persians was changed into a disorderly flight, of which the shameful example was given by the principal leaders and the Surenas himself.”

Texting is developing its own kind of grammar. Take LOL. It doesn’t actually mean “laughing out loud” in a literal sense anymore. LOL has evolved into something much subtler and sophisticated and is used even when nothing is remotely amusing. Jocelyn texts

What were the consequences?According to some accounts, Johnson wept at the news of his acquittal, vowing to devote himself to restoring his reputation.He served out the rest of his presidential term, but his final months in office were beset with the same power struggles that warped his tenure prior to impeachment.

According to some accounts, Johnson wept at the news of his acquittal, vowing to devote himself to restoring his reputation.

And buying Alaska in 1867 for a cool $7.2m.Johnson was also one of the poorest presidents. He never went to school.

Van Gogh dismissed the episode as "a simple artist's bout of craziness" and later a "mental or nervous fever".But research in the Netherlands has thrown new light on his mental state.

Van Gogh dismissed the episode as "a simple artist's bout of craziness" and later a "mental or nervous fever".But research in the Netherlands has thrown new light on his mental state.

In Van Gogh's case, the epileptic activity could have been caused by brain damage as a result of his lifestyle. Alcohol abuse, malnutrition, poor sleep and mental exhaustion could all have been factors, researchers say.

Spiders? Clowns? Really tall buildings? There are lots of things that might make you scream — but why is it that we get so scared and what can we do to control these fears?

"It's evolutionary, it's biological and essentially it's about survival," says Dr Warren Mansell, a psychologist at the University of Manchester and author of a book about coping with fear."Our bodies need a way of getting ourselves prepared to either escape or defend ourselves against some kind of threat.""Being able to recognise and respond to a threat quickly and to get away is essential," adds sociologist Dr Margee Kerr, who specialises in the study of fear. "It's definitely kept us humans alive."

The most common way we deal with fear is the "fight-or-flight" response, when your heart rate increases and your pupils dilate.

Ripped musclesThe metabolism is every drop of chemistry needed to keep the body going. And the bigger the body - whether that is ripped muscles or too much belly fat - the more energy it will take to run.

The study, published in the journal Science, found four phases of metabolic life:birth to age one, when the metabolism shifts from being the same as the mother's to a lifetime high 50% above that of adults a gentle slowdown until the age of 20, with no spike during all the changes of pubertyno change at all between the ages of 20 and 60a permanent decline, with yearly falls that, by 90, leave metabolism 26% lower than in mid-life

Other surprises came from what the study did not find. There was no metabolic surge during either puberty or pregnancy and no slowdown around the menopause.

There are three pernicious and interrelated phenomena at work here. First, founders are disproportionately white dudes. Second, white dudes are disproportionately encouraged to become founders. Third, white dudes are disproportionately recognized as founders.

Ultimately, this phenomenon can lead to the erasure of women and minorities in leadership roles from the picture

The research is broad and deep on the “glass walls” that keep women from becoming entrepreneurs, or the profound discrimination that many people of color face when starting their own businesses. Investors like a pitch coming from a man better than coming from a woman — even when the pitch is the same. Minority-owned firms get rejected for loans at twice the rate of white-owned firms, and often pay higher interest rates when they get them, too. 

the parents at the heart of America’s anti-vaccine movement are being blamed for incubating an otherwise preventable public-health crisis.

officials scrambled to try to contain a wider spread of the highly contagious disease — which America declared vanquished 15 years ago, before a statistically significant number of parents started refusing to vaccinate their children.

The anti-vaccine movement can largely be traced to a 1998 report in a medical journal that suggested a link between vaccines and autism but was later proved fraudulent and retracted. Today, the waves of parents who shun vaccines include some who still believe in the link and some, like the Amish, who have religious objections to vaccines. Then there is a particular subculture of largely wealthy and well-educated families, many living in palmy enclaves around Los Angeles and San Francisco, who are trying to carve out “all-natural” lives for their children.

SUPERMARKET shoppers are more likely to buy French wine when French music is playing, and to buy German wine when they hear German music. That’s true even though only 14 percent of shoppers say they noticed the music, a study finds.

Researchers discovered that candidates for medical school interviewed on sunny days received much higher ratings than those interviewed on rainy days. Being interviewed on a rainy day was a setback equivalent to having an MCAT score 10 percent lower, according to a new book called “Everyday Bias,” by Howard J. Ross.

Those studies are a reminder that we humans are perhaps less rational than we would like to think, and more prone to the buffeting of unconscious influences. That’s something for those of us who are white men to reflect on when we’re accused of “privilege.”

Some forms of exercise may be much more effective than others at bulking up the brain, according to a remarkable new study in rats. For the first time, scientists compared head-to-head the neurological impacts of different types of exercise: running, weight training and high-intensity interval training. The surprising results suggest that going hard may not be the best option for long-term brain health.

exercise changes the structure and function of the brain. Studies in animals and people have shown that physical activity generally increases brain volume and can reduce the number and size of age-related holes in the brain’s white and gray matter.

Exercise also, and perhaps most resonantly, augments adult neurogenesis, which is the creation of new brain cells in an already mature brain. In studies with animals, exercise, in the form of running wheels or treadmills, has been found to double or even triple the number of new neurons that appear afterward in the animals’ hippocampus, a key area of the brain for learning and memory, compared to the brains of animals that remain sedentary. Scientists believe that exercise has similar impacts on the human hippocampus.

WELLSTON, Ohio — To Gwen Beatty, a junior at the high school in this proud, struggling, Trump-supporting town, the new science teacher’s lessons on climate change seemed explicitly designed to provoke her.So she provoked him back.When the teacher, James Sutter, ascribed the recent warming of the Earth to heat-trapping gases released by burning fossil fuels like the coal her father had once mined, she asserted that it could be a result of other, natural causes.When he described the flooding, droughts and fierce storms that scientists predict within the century if such carbon emissions are not sharply reduced, she challenged him to prove it. “Scientists are wrong all the time,” she said with a shrug, echoing those celebrating President Trump’s announcement last week that the United States would withdraw from the Paris climate accord.

She was, he knew, a straight-A student. She would have had no trouble comprehending the evidence, embedded in ancient tree rings, ice, leaves and shells, as well as sophisticated computer models, that atmospheric carbon dioxide is the chief culprit when it comes to warming the world.

When she insisted that teachers “are supposed to be open to opinions,” however, Mr. Sutter held his ground.“It’s not about opinions,” he told her. “It’s about the evidence.”

The U.S. grew from a “backwoods country” to one of “greatest nations the world has ever known” thanks to science — but that pillar of America is eroding, astrophysicist Neil deGrasse Tyson warns.

Science deniers “rising to power” now create a “recipe for the complete dismantling of our informed democracy,”

“People have lost the ability to judge what is true and what is not, what is reliable, what is not reliable,” he says in the above video, which he posted to Facebook Wednesday. “That’s not the country I remember growing up in. I don’t remember any other time where people were standing in denial of what science was.”

Facebook is the world’s most influential source of news.That’s true according to every available measure of size — the billion-plus people who devour its News Feed every day, the cargo ships of profit it keeps raking in, and the tsunami of online traffic it sends to other news sites.

But Facebook has also acquired a more subtle power to shape the wider news business. Across the industry, reporters, editors and media executives now look to Facebook the same way nesting baby chicks look to their engorged mother — as the source of all knowledge and nourishment, the model for how to behave in this scary new-media world. Case in point: The New York Times, among others, recently began an initiative to broadcast live video. Why do you suppose that might be? Yup, the F word. The deal includes payments from Facebook to news outlets, including The Times.

Yet few Americans think of Facebook as a powerful media organization, one that can alter events in the real world. When blowhards rant about the mainstream media, they do not usually mean Facebook, the mainstreamiest of all social networks. That’s because Facebook operates under a veneer of empiricism. Many people believe that what you see on Facebook represents some kind of data-mined objective truth unmolested by the subjective attitudes of fair-and-balanced human beings.

Urban airports like Boston’s Logan thought they had silenced noise issues with quieter planes. Now complaints pour in from suburbs 10 to 15 miles away because new navigation routes have created relentless noise for some homeowners. Photo: Alamy By Scott McCartney Scott McCartney The Wall Street Journal BiographyScott McCartney @MiddleSeat Scott.McCartney@wsj.com March 7, 2018 8:39 a.m. ET 146 COMMENTS saveSB107507240220

It turns out engines aren’t the major culprit anymore. New airplanes are much quieter. It’s the “whoosh” that big airplanes make racing through the air.

Computer models suggest slowing departures by 30 knots—about 35 miles an hour—would reduce noise on the ground significantly.

King’s contemporaries’ real lives can bridge the gap between reality and fiction—especially the life of Coretta Scott King, his wife and fellow activist. “The scope of her activism and the breadth of the issues she was working on are an indication of where [Martin Luther King] would be,” suggests Jeanne Theoharis, a Brooklyn College political science professor and author of A More Beautiful and Terrible History: The Uses and Misuses of Civil Rights History.

King, if he had lived, would very likely have taken up those same banners—perhaps even marching them into the White House, speculates Komozi Woodard, a professor of history, public policy, and Africana studies at Sarah Lawrence College. “Hopefully, White America would have matured to the point of decriminalizing Dr. King as time went on” just as Nelson Mandela’s image shifted from terrorist to savior in South Africa, Woodard tells National Geographic. “Dr. King may have successfully run for president as Mandela did.”

A Living King One difference is a little easier to imagine, though it speaks volumes: we might not celebrate Martin Luther King Day in a world where he wasn’t assassinated.

magine this: When you leave the house, your air conditioner and lights turn off automatically. Then when a motion sensor detects a person in the house, like your house cleaner, it sends an alert to your phone. When you arrive home, a camera recognizes who you are and the door automatically unlocks.

Automated technologies like these will be at the forefront of CES, one of the world’s largest tech conventions, next week in Las Vegas. They underline one major trend: Increasingly, the innovations that are making their way into your personal technology aren’t physical electronics or gadgets at all.

he culmination of software, algorithms and sensors working together to make your everyday appliances smarter and more automated. It is

In addition to a list of people’s most-used words and other straightforward stats like follower counts, ThinkUp shows subscribers more unusual information such as how often they thank and congratulate people, how frequently they swear, whose voices they tend to amplify and which posts get the biggest reaction and from whom.

after using ThinkUp for about six months, I’ve found it to be an indispensable guide to how I navigate social networks.

Every morning the service delivers an email packed with information, and in its weighty thoroughness, it reminds you that what you do on Twitter and Facebook can change your life, and other people’s lives, in important, sometimes unforeseen ways.