During those barren winter months, with windows overlooking long-dead gardens, leafless trees, and lawns that seem to have an ashy look about them, nothing calms the uneasy nerves more than the vibrant green of plants surrounding the living spaces of one’s home. People browse through garden stores just to get a smell of chlorophyll (叶绿素) and to choose a plant or two to bring spring back into their winter-gray lives.

Now there is even more of a need for “the green,” in light of recent articles warning us of the dangers of chemicals that we, ourselves, introduce into our homes. Each time we bring clothes home from the cleaners, we release those chemicals into the closed-in air of our homes. Every cleanser releases its own kind of fumes.

Some of the chemicals are formaldehyde (甲醛), chlorine, benzene, styrene, etc. Read the labels on many home products, the ingredients aren’t even listed! During the winter, when those same windows are shut tight, we breathe in these chemicals—causing symptoms much like allergies (过敏). In fact, most people probably dismiss the effects of these chemicals simply as some allergy or other. The truth is that we are experiencing a syndrome that is called Multiple Chemical Sensitivity. Now, what has this got to do with green plants? Everything healthy! Research has been conducted with two types of plants that have actually removed much of these harmful chemicals from the air.

The two plants that seem to be the best bet for ridding one’s home of such chemicals are ferns (蕨类植物) and palms. These plants release moisture as part of photosynthesis and, as they do, pull chemicals from the air into their leaves. Even NASA has conducted some greenhouse experiments for long-term space exploration. Within hours, their plants [palms] had removed almost all traces of formaldehyde in the room. Both species of plants are ancient, dating back more than a hundred million years. Another trait they share is that they both live long lives, 100 years or more. This we expect from trees, but ferns and palms are plants; plants that can grow to 65 feet in the proper setting! Even their individual leaves live for one to two years [ferns] and one to nine years [palms]. Perhaps it is their primary qualities that have contributed to their ability to purify their environment.

Rather than building new homes to help satisfy housing markets, a new study says that taxing empty homes in big cities could increase housing affordability for local residents while generating income for the governments.

During the past 20 years, housing affordability has decreased significantly in the UK due to a rapid increase in prices relative to earnings. This may be due to foreign investors buying out properties in cities such as London, or from British citizens in the countryside buying out second homes in the city, which reduces the availability of affordable housing for local residents.

This means that local citizens who actually live in the city are forced to pay more money for housing in neighborhoods that are filled with homes that are unoccupied for more than half of the year.

In a study that was published recently,researcher Jonathan Bourne at University College London studied the relationship between the amount of properties which do not have permanent residents, and housing affordability in different parts of England and Wales. Upon researching the data, which represents about 40% of the population.the researcher was stunned to find that there were over 340,000 empty apartments across the places.

Though some cities are trying to meet housing demands by building more housing. Bourne suggests that local governments put an empty homes tax of 1% instead. “The data shows that empty homes are very concentrated in small numbers of desirable areas. In such cases simply building more homes is not going to solve the problem.as the issue is severe competition for property, not a lack of places to live." says Bourne.

Vancouver introduced a similar empty homes tax in 2017,which was the first oi its kind in North America. One year after it went into effect. the city reported a 15% decrease in unoccupied homes,which amounted to 163 properties being rented out to local people. Furthermore, the tax raised more than $ 38 million in city revenue(税收），all of which was spent on affordable housing programs.

For much of the past hundred years, classrooms have been designed with the teacher seated in front of desks for students. But many educators now say children can do better in a less structured environment.

Bob Pearlman works as an education consultant in the United States. He told The Associate Press that traditional classrooms are a thing of the past. Now students work in ''extended learning areas" that in elude project planning rooms, workrooms, and laboratories, as well as learning spaces for groups and individuals. Pearlman points to Albemarle County Public Schools, in Charlottesville, Virginia. The school system invited teams from all its schools to develop learning spaces that would help students deal with complex ideas and work on creative building projects. Now, its elementary school classes have exchanged traditional desks for things like soft seating and connectable tables.

Another change to the design of classrooms is the ability to connect to the Internet. " Classrooms, libraries, and laboratories used to be the only spaces where students spent their school hours. Wireless, laptops and project learning have changed that," Pearlman said. He noted that this has made all school spaces into possible extended learning areas.

David Thornburg, who wrote the book From the Campfire to the Holodeck, said Pearlman's concept catered to the students' need. He said schools should provide spaces based on how humans learn. That could mean one room is used in different ways at different times, or in different ways at the same time.

Earp is with Teacher magazine, a publication of the nonprofit Australia n Council for Educational Research. She noted that in the 1970s, American Robert Sommer, a psychologist, was urging a critical look at traditional classroom designs. Earp said that in addition to newer "freeform" classroom designs, some teachers could find good results with designs that combine new and old ideas. They could try lining up desks at the start of the year and then placing them in groups as the classroom relationships become clearer and project work begins.