【推荐1】Vancouver has had a crazy property (房地产) market since it hosted the winter Olympics in 2010. The downtown area is forested with new apartment blocks. Prices have risen by nearly 60% in the past three years. But until recently developers have largely avoided Chinatown. It is an underdeveloped area. Many Chinatown residents are old and poor.

Developers now have Chinatown in their sights. Two years ago one built a 17-storey apartment building on its edge. This alarmed many residents, who had formed a group to stop the high-rise advance, now called SaveChinatownYVR. Ms. Melody Ma is its leader. Recently it has been successful.

The main theatre of battle is a car park known as 105 Keefer, where Beedie Living plans to build a nine-storey brick-and-glass apartment block. The developer promises 111 luxury flats, with rooftop landscaping and shops below.

105 Keefer is in an area rich with cultural associations. Just to the south is a monument to Chinese-Canadian builders of the Canadian Pacific Railway and veterans of the Second Word War. Across the street is the Sun Yat-sen Classical Chinese Garden and the Chinese Cultural Centre Museum. “A lot of people were frightened” because of the building’s “closeness to sacred sites in the heart of Chinatown,” says Ms. Ma. Some residents also fear that it will push up rents.

Conservationists hope that the parking lot is where they can stop development, which they say has spoilt the charm of other Vancouver neighborhoods such as Mount Pleasant. The dispute (分歧) is part of a debate about the city’s identity, says Andy Yan, an urban planner. Vancouverites, he says, are asking themselves, “Who are we? And what are we building for?” The people who might want to buy the flats that do not yet exist are, of course, not being consulted.

【推荐3】Twenty-four trains, nine countries, 13, 500 miles. They are the numbers behind the heroic round trip one man took from Southampton in the UK to eastern China.

Roger Tyers, 37, used over $2, 500, which was almost twice more than the cost of a return flight, to travel to the Chinese port city Ningbo for academic research in May, 2019. The man spent a month on board 15 trains during the first leg of his round trip. It was the climate crisis, not a love of trains, that drove the sociologist to choose this complicated route over a return flight. He stopped flying when UN climate experts warned that the world had less than 11 years to avoid terrible levels of global warming. Tyers calculated that his train journey to China produced almost 90% less emissions than a return flight.

Tyers is not the only person to avoid air travel in response to climate change. Thousands of people worldwide have publicly promised to stop flying. Activist Maja Rosen launched the “Flight Free” campaign in Sweden with the goal of encouraging 100,000 people not to fly for one year. Although only around 14,000 people signed the online “#flightfree2019” pledge (保证), Rosen, who stopped flying 12 years ago, says that the campaign had made more people worry about the climate crisis and aware of harm of travel by air and motivated them to try new ways of travelling.

According to a survey released in May 2019 by Swedish Railways (SJ), 37% of respondents chose to travel by train instead of by plane where possible, compared to 20% at the start of 2018. An SJ spokesperson said: “Rail travel has been augmented due to the worries.” Domestic passenger numbers in July fell by 12% compared to the previous year, according to Swedavia, a company which operates Sweden’s 10 busiest Airports.

“The collective pledge helps fight the sense of hopelessness many people feel when it comes to tackling climate change”, Rosen said. “One of the problems is that people feel there’s no point in what you do as an individual. The campaign is about making people aware that if we do this together, we can actually bring changes.”

【推荐2】A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.

Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanomas(黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.

Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.

But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.

The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer—people with fair skin and freckles(雀斑), for example—are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.

The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.