There will finally come a day when The New York Times ceases (停止) to publish stories on newsprint. Exactly when that day will be is a matter of debate. “Sometime in the future,” the paper’s publisher said back in 2010.

Nostalgia (怀旧) for ink on paper and the rustle of pages aside, there’s plenty of motivation to ditch (放弃) print. The infrastructure required to make a physical newspaper-printing presses, delivery trucks—isn’t just expensive; it’s excessive at a time when online-only competitors don’t have the same set of financial requirements. Readers are migrating away from print anyway. And though print ad sales still dwarf their online and mobile counterparts, revenue (收入) from print is still declining.

Overhead may be high and circulation may be lower, but rushing to eliminate (淘汰) its print edition would be a mistake, says BuzzFeed CEO Jonah Peretti.

Peretti says the Times shouldn’t waste time getting out of the print business, but only if they go about doing it the right way. “Figuring out a way to accelerate that transition would make sense for them,” he said, “but if you discontinue it, you’re going have your most loyal customers really upset with you.”

Sometimes that’s worth making a change anyway. Peretti gives the example of Netfix discontinuing its DVD-mailing service to focus on streaming. “It was seen as blunder,” he said. The move turned out to be foresighted. And if Peretti were in charge at the Times? “I wouldn’t pick a year to end print,” he said “I would raise prices and make it into more of a legacy product.”

The most loyal customers would still get the product they favor, the idea goes, and they’d feel like they were helping sustain the quality of something they believe in. “So if you’re overpaying for print, you could feel like you were helping,” Peretti said. “Then increase it at a higher rate each year and essentially try to generate additional revenue.” In other words, if you’re going to make a print product, make it for the people who are already obsessed with it. Which may be what the Times is doing already. Getting the print edition seven days a week costs nearly $500 a year—more than twice as much as a digital - only subscription.

“It’s a really hard thing to do and it’s a tremendous luxury that BuzzFeed doesn’t have a legacy business,” Peretti remarked. “But we’re going to have questions like that where we have things were doing that don’t make sense when the market changes and the world changes. In those situations, it’s better to be more aggressive than less aggressive.”

A 14-year-old teenager was named “America’s Top Young Scientist” after winning this year’s 3M Young Scientist Challenge, a national science competition. He was given the title for creating a bar of soap (肥皂) that fights low-grade skin cancer and also awarded $25,000 for his research.

Heman Bekele, who is a freshman at WT Woodson High School, moved to Virginia from Ethiopia, where he observed people constantly exposed to the sun and suffering from skin cancer. While he didn’t initially give it much thought, as the competition drew near, he remembered his experiences in Ethiopia and decided to focus his research on skin cancer.

Heman started doing experiments at home and doing testing on digital models. He learned much about dendritic cells (named for their tree-like branches), which boost human immune (免疫的) responses. In his submission video to 3M, Heman explains, “When skin cancer cells develop, they weaken dendritic cells in the body, allowing the cancer to take over.” He said the soap contains agents that could potentially reactivate dendritic cells that help eliminate the cancer cells.

The soap can be applied to the skin every couple of days and then the person with skin cancer will start to see progress. “The average price of skin cancer treatment in the US alone is almost $40,000, but my bar of soap only costs $8.50 to create, and it can have the same effects as something that people would pay thousands and thousands of dollars to try to get,” Heman said.

For now, Heman said he has a five-year plan. At the end of it, he hopes to have created a nonprofit organization where he can provide accessible skin cancer treatment to as many people as possible. But to achieve his goal, he would have to get his treatment through clinical trials and have it certified by the Food and Drug Administration (FDA), he said.

If you ever find yourself yawning during a long video call, you may soon see yawns(哈欠)spread to the other faces on your screen. Your pet under the desk may even join in.

Yawns can spread even between dogs and humans, as reported in 2008 and 2012. At the time empathy-the ability to put yourself in another’s shoes—was one of the most probable explanation. But new evidence suggests this reasoning is wrong.

To get a better understanding, researchers examined whether dogs’ yawning follows the same behavioral patterns with humans. For instance, people are both more likely to yawn with friends and families than with strangers. Besides, women, on average, report greater feelings of empathy than men, and catch yawns more frequently. But earlier this year, when researchers analyzed previous studies of yawning in dogs, they found no sign of this bias(偏向).

How often do dogs catch yawns from humans who are nice or not so nice to them? In another study, an experimenter would either play with or pet the dog, or plainly ignore the dog and avoid all eye contact. The antisocial experimenter would also show the dog a treat and command it to perform a trick, and then eat the treat themselves. But this did not affect the dogs’ yawning.

It’s still unclear why we yawn in the first place. One hypothesis is that yawning is a stress response that increases alertness by increasing blood flow to the brain and cooling it. “Having yawns spread could help coordinate(协调)a group’s alertness. However, this is one nice evolutionary story that we don’t have that much evidence for. This doesn’t mean your dog doesn’t have empathy at all. Instead, the study shows that animal minds are still a mystery,” says Alex Taylor, an evolutionary psychologist.