By announcing the first detection of gravitational waves, scientists have vindicated Einstein and given humans a new way to look at the universe.
More than a billion years ago, in a galaxy that sits more than a billion light-years away, two black holes spiraled together and collided. We can’t see this collision, but we know it happened because, as Albert Einstein predicted a century ago, gravitational waves rippled out from it and traveled across the universe to an ultra-sensitive detector here on Earth.
This discovery, announced today by researchers with the Laser Interferometer Gravitational-wave Observatory (LIGO), marks another triumph for Einstein’s general theory of relativity. And more importantly, it marks the beginning of a new era in the study of the universe: the advent of gravitational-wave astronomy. The universe has just become a much more interesting place.
The city has filed a suit demanding $500 in payment for emergency treatment for the boy after a police officer fatally shot him.
What’s more outrageous than having a police officer shoot an unarmed 12-year-old, failing to provide medical care, keeping his family forcibly from the scene, and then declining to indict the officer for the death? In most cases, little. But the city of Cleveland has found a way: It is suing Tamir Rice’s family for not paying the ambulance bill after a Cleveland cop shot and killed the boy in November 2014.
As the Scene reports, Cleveland has filed a claim in probate court, seeking $500 from Rice’s estate to pay for emergency medical services rendered after Officer Timothy Loehmann fatally shot the boy. The charge is especially galling because Loehmann and another officer apparently had no training or equipment to provide aid to Rice after they shot him. They did nothing for four minutes until an FBI agent who happened to be nearby took over.
A new report from OkCupid finds that American daters are growing more traditional in some ways, and more open-minded in others.
It was the best of times, it was the worst of times, it was Carrie Underwood’s time. It was the age of wisdom, but also of low-rise jeans. It was only just over a decade ago, but oh, how things have changed since 2005.
The dating site OkCupid had launched the previous year, and it’s been asking its users questions about their relationship preferences ever since. This week, the company released a survey comparing the responses they received in 2005 to those collected in 2015. Though not as rigorous as a truly random survey, the data hint at changing views of sex, love, and gender norms among online daters in the U.S.
Surprisingly, OkCupid found that people have become more sexually conservative in certain ways. For example, fewer people now say they would have sex on the first date:
If Bernie Sanders is serious about a political transformation in America, he needs a better plan.
If there’s one thing that fires up Bernie Sanders supporters—and makes his detractors roll their eyes—it’s his call for a “political revolution.” To his base, it’s the very point of his anti-establishment, anti-elite candidacy. To his critics, it’s the very embodiment of his campaign’s naïve impracticality and vagueness.
But now that voters in Iowa and New Hampshire have spoken, it’s time to take the idea of political revolution more seriously—more seriously, indeed, than Sanders himself appears to have. It’s time to ask: What exactly would it take?
It starts with Congress. And here it’s instructive to compare Sanders and Donald Trump. Both rely on broad, satisfying refrains of “We’re gonna”: We’re gonna break up the big banks. We’re gonna make Mexico build the wall. We’re gonna end the rule of Wall Street billionaires. We’re gonna make China stop ripping us off.
The two insurgents want to take America in radically different directions—with Donald Trump looking to keep the world out and Bernie Sanders looking to bring it in.
Pundits keep reminding us that the two men who won New Hampshire, Donald Trump and Bernie Sanders, are both “outsiders.” But that doesn’t mean much. George Wallace and George McGovern were both outsiders, too. While the Trump and Sanders campaigns both represent insurgencies against party elites, they represent insurgencies aimed at taking America in radically different directions. One way of understanding those different directions is through American exceptionalism. Sanders voters want to make America more like the rest of the world. Trump voters want to keep America a nation apart.
American exceptionalism has meant different things at different historical periods. But today, it generally denotes Americans’ peculiar faith in God, flag, and free market—a religiosity, a nationalism, and a rejection of socialism and class-consciousness that distinguishes the United States from other advanced democracies. The Sanders campaign represents an assault on all three. From H.G. Wells to Karl Marx, foreign observers have long fingered America’s lack of socialism as a key characteristic distinguishing it from Europe. But Sanders is a democratic socialist; he doesn’t run from the term. And neither do his backers. In a January poll of likely caucusgoers in Iowa, The Washington Post reported that more Democrats called themselves “socialists” than “capitalists.” Sanders’s socialism is especially popular among the young. A 2011 Pew Research Survey found that while Americans 65 and older favored capitalism over socialism by 39 points, Americans under 30 favored socialism.
The number of American teens who excel at advanced math has surged. Why?
On a sultry evening last July, a tall, soft-spoken 17-year-old named David Stoner and nearly 600 other math whizzes from all over the world sat huddled in small groups around wicker bistro tables, talking in low voices and obsessively refreshing the browsers on their laptops. The air in the cavernous lobby of the Lotus Hotel Pang Suan Kaew in Chiang Mai, Thailand, was humid, recalls Stoner, whose light South Carolina accent warms his carefully chosen words. The tension in the room made it seem especially heavy, like the atmosphere at a high-stakes poker tournament.
Stoner and five teammates were representing the United States in the 56th International Mathematical Olympiad. They figured they’d done pretty well over the two days of competition. God knows, they’d trained hard. Stoner, like his teammates, had endured a grueling regime for more than a year—practicing tricky problems over breakfast before school and taking on more problems late into the evening after he completed the homework for his college-level math classes. Sometimes, he sketched out proofs on the large dry-erase board his dad had installed in his bedroom. Most nights, he put himself to sleep reading books like New Problems in Euclidean Geometry and An Introduction to Diophantine Equations.
For decades, some psychologists have claimed that bilinguals have better mental control. Their work is now being called into question.
In one of his sketches, comedian Eddie Izzard talks about how English speakers see bilingualism: “Two languages in one head? No one can live at that speed! Good lord, man. You’re asking the impossible,” he says. This satirical view used to be a serious one. People believed that if children grew up with two languages rattling around their heads, they would become so confused that their “intellectual and spiritual growth would not thereby be doubled, but halved,” wrote one professor in 1890. “The use of a foreign language in the home is one of the chief factors in producing mental retardation,” said another in 1926.
A century on, things are very different. Since the 1960s, several studies have shown that bilingualism leads to many advantages, beyond the obvious social benefits of being able to speak to more people. It also supposedly improves executive function—a catch-all term for advanced mental abilities that allow us to control our thoughts and behavior, such as focusing on a goal, ignoring distractions, switching attention, and planning for the future.
When two black holes collide, the noises scientists hear are birdlike.
This morning, scientists from the Laser Interferometer Gravity Observatory announced that LIGO had detected gravitational waves from the collision of two black holes, an event so cataclysmic that it converted the mass of three solar systems into pure energy in about a tenth of a second.
Scientists have been trying to figure out how to “listen” to gravitational waves—and to prove their existence—ever since Einstein predicted them in 1915. But until September 14, 2015, when the colliding black-hole event was first detected, this was beyond our technical abilities. In the words of Scott Hughes, “Gravity is a weak force. Measuring these things is bloody hard.”
Hughes is a theoretical physicist at MIT who has been contemplating LIGO since its inception in 1992. He has struggled with a question at the heart of the observatory program: Once we do hear gravitational waves, how will we know where they come from? How can we use them to explore the mysteries of the cosmos? To this end, Hughes has modeled the “sounds” of a host of astrophysical events, including colliding black holes. (You can listen to his impressions of these sounds below.)
The ancient civilization may have tracked Jupiter using sophisticated methods, but their reasons for stargazing were very different than ours.
We’ve never escaped the influence of the Babylonians. That there are 60 seconds in a minute, 60 minutes in an hour, and 360 degrees in a full circle, are all echoes of the Babylonian preference for counting in base 60. An affinity for base 12 (inches in a foot, pence in an old British shilling) is also an offshoot, 12 being a factor of 60.
All this suggests that the Babylonians had a mathematics worth copying, which was why the Greeks did copy it and thereby rooted these number systems in Western tradition. The latest indication of Babylonian mathematical sophistication is the discovery that their astronomers knew that, in effect, the distance traveled by a moving object is equal to the area under the graph of velocity plotted against time. Previously it had been thought that this relationship wasn’t recognized until the fourteenth century in Europe. But since historian Mathieu Ossendrijver of the Humboldt University in Berlin found the calculation described in a series of clay tablets inscribed with cuneiform writing in Babylonia during the fourth to the first centuries B.C.E., where it was used to figure out the distance traveled across the sky by the planet Jupiter.
When four American women were murdered during El Salvador’s dirty war, a young U.S. official and his unlikely partner risked their lives to solve the case.
On December 1, 1980, two American Catholic churchwomen—an Ursuline nun and a lay missionary—sat down to dinner with Robert White, the U.S. ambassador to El Salvador. They worked in rural areas ministering to El Salvador’s desperately impoverished peasants, and White admired their commitment and courage. The talk turned to the government’s brutal tactics for fighting the country’s left-wing guerrillas, in a dirty war waged by death squads that dumped bodies in the streets and an army that massacred civilians. The women were alarmed by the incoming Reagan administration’s plans for a closer relationship with the military-led government. Because of a curfew, the women spent the night at the ambassador’s residence. The next day, after breakfast with the ambassador’s wife, they drove to San Salvador’s international airport to pick up two colleagues who were flying back from a conference in Nicaragua. Within hours, all four women would be dead.
Russell Simmons on advocating the world’s most pretentious diet
How Star Lotulelei of the Carolina Panthers made it to the NFL
A couple shares their experience.