Erik Tarloff

LAS VEGAS—Swing past Caesars Palace; head up the Bellagio’s driveway, where its famous fountains are erupting to an auto-tuned Cher hit. Walk by the Dale Chihuly glass-flower ceiling above the check-in line, and the animatronic exhibit with the half-human, half-monkey figures. Head past the blackjack tables and the jangling slot machines and the chocolate fountain to the austere concrete corridors beyond them. There, getting wheeled around in a red metal-frame wheelchair is the 80-year-old man on whom the unity of the Democratic Party in 2020—if not the Democratic nomination—may hinge.

If he can stay alive that long.

Harry Reid, who retired in 2017 after representing Nevada for 30 years in the U.S. Senate—a dozen of them as chair of the Democratic caucus, eight of them as Senate majority leader—was supposed to be dead already; his pancreatic cancer was forecasted to prove fatal within weeks. But he’s still here, which is how I came to be talking with him, not long before Thanksgiving, in a conference room at the Bellagio, asking him why he remains the person to whom many of the Democratic presidential candidates come for advice and anointment.

Shortly after I met my wife, Cindy, in 1989—she was living in New York City at the time, while I was living in Northern Virginia—she told me about a new church she was attending in Manhattan: Redeemer Presbyterian. The young minister, she told me, was “the best pastor in America.”

His name was Timothy J. Keller.

Since that time Keller, 69, has become one of the most consequential figures in American Christianity. When he founded Redeemer in the fall of 1989, fewer than 100 people attended; in the aftermath of the attacks on September 11, 2001, Keller was preaching in multiple services in three different venues each Sunday to about 5,000 people—mostly young, single, professionally and ethnically diverse. He has written about two dozen books, several of them best sellers. And unlike that of many popular ministers, his reach extends far beyond the Christian subculture.

In the 1960s, doctors counting the number of chromosomes in human white blood cells noticed a strange phenomenon. Frequently—and more frequently with age—the cells would be missing the Y chromosome. Over time, it became clear this came with consequences. Studies have linked loss of the Y chromosome in blood to cancer, heart disease, and other disorders.

Now a new study—the largest yet of this phenomenon—estimates that 20 percent of 205,011 men in a large genetic database called the UK Biobank have lost Y chromosomes from some detectable proportion of their blood. By age 70, 43.6 percent of men had the same issue. It’s unclear exactly why, but the authors think these losses might be the most glaring sign of something else going wrong inside the bodies of these men: They are allowing mutations of all kinds to accumulate, and these other mutations could be the underlying links to cancer and heart disease.

Before he became mayor of his hometown of South Bend, Indiana, the Democratic presidential candidate Pete Buttigieg worked for the consulting firm McKinsey & Company. He has used this brief experience to distinguish his record from that of longtime politicians such as Joe Biden and critics of private-sector excesses such as Bernie Sanders and Elizabeth Warren.

But voters have no idea what kind of work Buttigieg did, or who he worked for, during his three years at McKinsey. And he won’t tell us. The candidate says he signed a nondisclosure agreement, from which the company has not released him.

“This is not a tenable situation,” the New York Times editorial board declared this week, calling his silence “inconsistent with the manner in which Mr. Buttigieg has chosen to present himself to voters.”

It was the best of times, it was the worst of times. Television in 2019 offered up sweet birthday babies and hot priests; exposed nuclear cores and examined injustices; giant octopuses and the king of edible leaves, His Majesty the Spinach. It was a year in which more than 500 original scripted series were estimated to air—a new record signaling a television landscape that’s more abundant but also more fragmented than ever.

With that in mind, this year’s “best of” list, like last year’s, tries to recognize shows that did specific things particularly well. Some were brand new; some have already been canceled. But most of them came into being because someone took a chance on an odd idea, a risky concept, or a distinctive voice. As the streaming wars heat up, none of these series feels like a safe bet, which is precisely what makes them so worthwhile to watch.

For Ryan Rucker, a dad in Vacaville, California, the weekly summons comes on Wednesday mornings, usually around seven. For Rosanne Sweeting on Grand Bahama island, in the Bahamas, it’s twice a week—Mondays and Thursdays, anytime from 6 to 8:30 a.m.—and for Whitney Schlander in Scottsdale, Arizona, it’s every Tuesday morning at half-past seven.

At these times, the quiet of the morning is broken by the beep beep beeping of an approaching garbage truck—and broken further when their kids start hollering, begging to be escorted outside to wave or just watch in awe as the truck collects and majestically hauls away the household trash. Rucker’s daughter Raegan, 3, takes her stuffed animals outside with her to watch the pickup. Cassidy Sweeting, 4, enlists her mom’s help to deliver granola bars and water bottles to the three trash collectors. Finn Schlander, 3, invited the neighborhood garbage-truck driver to his birthday party. (Ultimately, he was unable to attend, but the party had garbage-truck decorations nonetheless.)

The internet has some feedback on Peloton’s holiday ad campaign. The fitness-tech company, famous for its $2,400, Wi-Fi-enabled stationary bikes that let riders stream spin classes, debuted a new television commercial in mid-November, but it didn’t become infamous until earlier this week, when Twitter got ahold of it.

In the ad, a young mom gains confidence in the year after her husband buys her a Peloton for Christmas—or, at least, that’s what the ad seems to be aiming for. The commercial documents the woman (who is also documenting herself, via her phone’s front-facing camera) while she gets up early day after day to exercise or jumps on the bike after work. At the end, she presents the video of her exercise journey to her husband. “A year ago, I didn’t realize how much this would change me,” she tells him. “Thank you.”

Festooned with mustard-yellow drapes and a dangling American flag, the room resembled a grange hall on bingo night. At center stage sat a wide vase containing oblong, plastic lotto balls, and over that vessel stood Representative Alexander Pirnie of New York. As his hand dug into the vase he averted his eyes, like a game-show contestant pulling prizes from a mystery bag. Almost as many U.S. television viewers as had seen the Apollo 11 moon landing a few months earlier were watching him now.

Inside each capsule was a small sheet, to be pulled out like the slip from a fortune cookie. But these small strips did not predict the future; they changed it. Each paper’s inscription scheduled the assignment of what scientists would call a “treatment condition”—an intervention that, from that day onward, would alter the life outcomes its subjects experienced, just as a pill randomly allocated in a pharmaceutical trial might alter a participant’s health. Pirnie would not have thought of his role in these terms, but on December 1, 1969, he was serving as a lab assistant in one of the most significant randomized experiments in history: the Vietnam Selective Service Lotteries.

For a little NASA spacecraft, the weather outside is frightful.

The Parker Solar Probe is on a mission toward the sun. The spacecraft has been exposed to scorching temperatures and intense sunlight as it draws closer with every loop around. Eventually, Parker will glide through the star’s outer atmosphere and feel the toastiness of nearly 2 million degrees Fahrenheit (more than 1 million degrees Celsius).

Parker is dressed appropriately for the journey. It wears a thick, custom-made shield to protect its scientific instruments and systems, and tubes with flowing water to cool itself down. Inside, it is a cozy 78 degrees Fahrenheit (26 degrees Celsius). Since it set out last summer, Parker has made three sweltering passes of the sun, with many more still to come in the next five years. And its findings are already surprising scientists back home.

Two of the nation’s last three presidents won the presidency in the Electoral College, even though they lost the popular vote nationwide. In 2000, Al Gore outpolled George W. Bush by more than 540,000 votes but lost in the Electoral College, 271–266. Sixteen years later, Hillary Clinton tallied almost 3 million more votes than Donald Trump but lost decisively in the Electoral College, 306–232. And, as a recent New York Times poll suggested, the 2020 election could very well again deliver the presidency to the loser of the popular vote.

Despite this, defenders of the Electoral College argue that it was created to combat majority tyranny and support federalism, and that it continues to serve those purposes. For example, Representative Dan Crenshaw of Texas, responding to Representative Alexandria Ocasio-Cortez’s recent criticism of the Electoral College, tweeted that “we live in a republic, which means 51% of the population doesn’t get to boss around the other 49%,” and that the Electoral College “promotes more equal regional representation and protects the interests of sparsely populated states.”