4 . Seasonality is a big part of business. For some industries, seasonal patterns are a defining feature. Agriculture is one obvious example; tourism another. Western toymakers notch up a huge proportion of their annual sales during Christmas. Construction is harder during cold weather, when that industry employs fewer people.

Firms less obviously tied to the seasons can still be deeply affected by them, as a recent review by Ian Hohm of the University of British Columbia makes clear. An analysis of social-media posts on the Internet found that dieting-related posts peak in the spring, as the season of body dysmorphia(变形) approaches.

Even when overall demand doesn’t vary greatly between the seasons, preterences change. Beef-eaters buy roasts in the slow-cooking winter season and plump for steaks during the summer months. Starbucks is among those firms that make seasonality a marketing event. The pumpkin-spiced latte is a reliable sign that autumn is on its way, along with falling leaves.

Seasonality also leaves a less obvious imprint(印记) inside organisations. This week, with so many bosses stuck on a mountain for the World Economic Forum’s annual meeting in Davos, productive employees can get on with some work and lazy ones can relax. School holidays offer an obvious form of seasonality, when employees without children are upset that they are covering for colleagues on holiday, and colleagues on holiday are upset that they have children.

Pay decisions are seasonal events, too. The time when employees find out their salary rises and bonuses sets off disappointment and happiness in all workplaces. In some, they are more like tsunamis. The actual date on which bonuses are paid matters too—once the money is safely put in the bank, people are more likely to move jobs.

There are other forms of corporate seasonality. While there isn’t much research on the impact of seasonality within firms, it’s certain that they have their own annual rhythms.

5 . Whenever he can, 15-year-old Elliot Morgan practices basketball in his backyard. He says it’s a good stress-reliever. But it wasn’t that long ago that he didn’t have time for this new hobby. “There were times in the summer when I would spend four or five hours a day on my phone,” he says. When school started in the fall, Morgan found himself scrolling (划屏) as soon as he woke up. “I realize I start to avoid workouts because I’m on my phone,” he says. “It’s affecting my focus.”

It has become clear that social media is a key player in many drivers of unhealthy habits. Social media apps are designed to encourage overuse, and teenagers are more likely to be influenced because their brains are at an important period of development that makes it harder to be free from temptation (诱惑). All of this makes limiting use more challenging — even for families who set rules.

“It’s a really big problem,” says Elliot’s mom, Alyssa. She was shocked when she discovered Elliot had bypassed parental controls and was spending five hours a day on social media. “I asked him, ‘Can you just take a look and see? Just tell me what you think. Does this feel good to you?’” she says.

Elliot hadn’t realized how many hours he was on social media. And he was at a loss. With his mother’s help, he tried to start cutting back. After several months, he decided to delete (删除) social media apps altogether. “After that, I actually sleep enough and feel better,” he says. He’s now closer with his friends because they spend more time talking instead of scrolling. And joining school clubs has also helped him reduce time on his phone.

6 . Leading museums in the United States are covering up or closing displays featuring Native American cultural objects owing to new federal rules. The new regulations require museums to obtain “free, prior and informed permission” from tribal leaders before displaying ancestral heritage items.

The American Museum of Natural History in New York City, the largest natural history museum in the world, announced on Jan 26 that it would close two halls spanning 10,000 square feet with Native American exhibits, as the exhibits are “severely outdated”. “The halls we are closing contain artifacts(历史文物) of an era when museums such as ours did not respect the values, perspectives and indeed shared humanity of Native Americans,” museum President Sean Decatur said in a letter to the staff, The New York Times reported. “The number of cultural objects on display in these halls is significant, and because these exhibits are also severely outdated, we have decided that rather than just covering or removing specific items, we will close the halls,” Decatur said. The move comes because of the implementation(执行) in early January of update d regulations under the Native American Graves Protection and Repatriation Act (NAGPRA).

Over the next five years, museums, universities, art institutions and similar places are required to undertake essential updates to prepare all human remains and related funerary(葬礼的) objects for repatriation(遣送),making sure that tribes have more power and increased authority throughout the process. “The ultimate goal of the law is not to cover up exhibitions. It’s not to prevent appropriate education about diverse native cultures. It’s about repairing and repatriating items that have been stolen over the last couple of centuries and returning them to the rightful people,” Shannon O’Loughlin, the CEO of the Association on American Indian Affairs said.

Chicago’s Field Museum earlier this month also closed several displays featuring Native American cultural items. The Field Museum has one of the biggest collections of Native American remains in the country and opened a new permanent exhibition in the spring of 2022 that displaced the museum’s longstanding Native American exhibition since the 1950s.

Harvard University, which has more than 5,000 Native American human remains, has said it will remove all Native American funerary items from its exhibits. “Exhibitions have always been discussed during tribal discussions and cultural items have been removed from display at the tribal request. With the new NAGPRA regulations, the museum is in the process of removing all the funerary belongings and likely funerary belongings off display,” Harvard University’s Peabody Museum of Archaeology and Ethnology, said in a statement.

9 . When the PISA worldwide educational comparisons came out late in 2023, most countries fell to wondering how to do better. Spain had lost ground since the last time the tests were done in 2018. But students in Catalonia lost even more. Besides, native Spanish-speakers did worse than Catalan-speakers, which soon led to the blame on language policy.

In the 1980s Catalonia began a transition to teaching all subjects in Catalan, except Spanish. Several years ago the region’s top court ruled that at least 25% of classes must be given in Spanish. The regional government, led by separatists, then passed a law allowing individual school heads to raise or lower the level of teaching in Spanish, according to their need.

A new report for the Association for Bilingual Schools in Catalonia (AEB), which campaigns for more Spanish, said that hardly any schools have changed their published policies. And so they requested the European Parliament to investigate whether pupils’ basic rights had been violated. The week before Christmas a delegation made a fact-finding trip. The Catalan education secretary says they came having already made up their minds that the region’s language policy harms pupils’ performance.

In the Escola San Jaume, a primary school in El Prat de Llobregat, a heavily Spanish-speaking town near Barcelona, all signs are in Catalan. Only about 10% of the pupils are native Catalan-speakers, says the director, Arturo Ramírez. Despite the never-ending discussion across Spain, it is one largely achieved in Catalonia, where over 80% of the population speaks and reads Catalan, and everyone, except some immigrants, speaks Spanish too. Watching the happy students on his playground, Mr Ramírez says “There is no problem here. The problem is outside the building.”

10 . The ocean depths contain the metals needed for the widespread use of battery-dependent technologies like electric vehicles, which will help reduce greenhouse gas emissions. Interested parties see this as a solution to our technological demands and the pressing need for a “green transition”. However, it raises a crucial question: should we mine the deepest stretches of the world’s oceans?

Some scientists and activists warn that seabed mining could cause an irreversible (不可逆的) chain reaction, severely harming the ocean and threatening entire ecosystems on the ocean floor. There are also potential risks to our health, including toxic metals entering the human food chain, and affecting climate change. The most significant direct impact of mining in remote ecosystems is the probable loss of habitat and biodiversity.

Dr Chong Chen is a deep sea biologist at the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). “There are undoubtedly many undiscovered species with abilities and functions that we cannot even imagine exist,” he says, “and we could lose them without knowing they ever existed.”

The mining process also disturbs seabed sediments (沉积物) and releases them back into the sea, raising additional concerns among scientists. Mining is for metals, whose stability of the construction are unchecked. “Some of those may be broken down and be directly into the water column,” says Jeffrey Drazen, professor of Oceanography with the University of Hawaii at Manoa. “Some of these metals are toxic to life.” says Professor Drazen. At the same time, he acknowledges the core challenge is ensuring whether the benefits of extracting (提取) deep-sea mineral resources outweigh the potential harm to our ecosystem. He notes that it’s a tough choice.

The positive development is that, for the first time, companies, governments, and civil society are actively participating in international discussions to create rules and regulations for the deep-sea mining industry before it begins.