2 . As a classic love movie of the twentieth century, Titanic makes one scene a long-lasting cinematic shot: Jack let go of his hand and sank in the icy seawater, leaving the chance of living to his lover Rose, who finally survived on a wooden door debris (残骸).

More than 100 years since the disastrous event and more than two decades after the earliest release of the movie Titanic, there have been many “door theories”. Audiences debate heatedly over whether or not Jack and Rose could have both fit onto the wooden debris and survived. So, was there room for Jack?

In a TV program, hosts Jamie and Adam even did an experiment using an exact replica       (复制品) of the wooden piece from the movie, and the two proved that if they had tied Rose’s life jacket to the bottom of the door to strengthen its buoyancy ( 浮 力 ), they would have managed to stay afloat.

However, their conclusion was debunked when director Cameron said that the freezing water and Jack’s high temperature would have made the life jacket solution impossible. He also said that the debate is beyond the point the movie was trying to make, which is focused on the tragic love story of Jack and Rose, not physics.

The largest debris recovered from the real Titanic is now displayed in the Maritime Museum. The museum’s website states that a replica was once built for the movie based on the museum’s Titanic collection which was known as the “door” used in the death scene. Unfortunately, the size of the debris coupled with the weight of Rose on top could work, but not if Jack’s additional weight was added to it.

In a word, science has proven that Jack didn’t die for nothing and did indeed sacrifice himself to save the love of his life.

3 . A small bowl bought at a yard sale in Connecticut for just $ 35 has been identified as a rare 15th-century Chinese antique.

The blue-and-white bowl was made by China's royal court during the Ming dynasty. It is now expected to sell for up to $500,000, according to Sotheby's auction(拍卖)house in New York, where the auction will take place next month.

The purchase was made last year near New Haven, Connecticut. “I was just hanging around there aimlessly. But when I saw this bowl, I didn't even bargain over the $35 asking price,” the owner said. Shortly after the purchase, he sent photos of the bowl to auction specialists, who identified it as an item of historical significance.

Upon closer inspection, the artifact was found to have originated from the period of Yongle Emperor, who ruled from 1403 to 1424 - a period noted for its distinctive porcelain (瓷器)techniques. It's now valued between $300,000 and $500,000, with the top estimate nearly 14,300 times the amount it was purchased for.

“I was deeply attracted by the techniques. You can see why this bowl is so highly-valued from the very smooth porcelain body, silky glaze(上釉)and special blue coloring, which were never reproduced in later dynasties,” McAteer, an auction specialist, said.

“The Yongle Emperor improved the porcelain techniques and elevated the importance of porcelain from being an ordinary bowl into a true work of art. This small bowl has both practical and artistic value, ”McAteer said.

4 . Coca-Cola is to test a paper bottle as part of a longer-term goal to get rid of plastic from its packaging entirely. The prototype (样本) is made by a Danish company from an extra-strong paper shell that still contains a thin plastic liner (衬垫). But the goal is to create a 100% recyclable, plastic free botte capable of preventing gas escaping from carbonated (碳酸) drinks. The barrier must also ensure no fibers get into the liquid.

That may have a risk of changing the taste of the drink — or potentially can't meet the requirements of health and safety checks. But industry giants (巨头) are backing the plan. Coca-Cola, for example, has set a goal of producing zero waste by 2030. Coca-Cola was ranked the world's number one plastic polluter by charity group Break Free From Plastic last year, closely followed by other drink-producers Pepsi and Nestle.

The Paper Bottle Company, or Paboco, is the Danish firm behind the development of the paper-based container. Part of the challenge has been to create a structure capable of standing the forces exerted by carbonated drinks — such as cola and beer — which are bottled under pressure. On top of that, the paper needs to be mouldable to create distinct bottle shapes and sizes for different brands and take ink for printing their labels.

After more than seven years of lab work, the firm is now ready to host a trial in Hungary this summer of Coca-Cola's fruit drink Adez. Initially, this will involve 2,000 bottles distributed via a local retail chain.

But it is also working with others. Absolut, the vodka maker, is due to test 2,000 paper bottles of its own in the UK and Sweden of its pre-mixed, carbonated raspberry drink. And beer company Carlsberg is also building prototypes of a paper beer bottle.

Michael Michelsen, the firm's commercial manager, says the bottles are formed out of a single piece of paper-fiber-based material to give them strength.

5 . Bangladesh's floating gardens, built to grow food during flood seasons, could offer a continuous solution for parts of the world which are likely to suffer from flooding because of climate change, a new study has found.

Bangladesh's floating gardens began hundreds of years ago. The gardens are made from native plants that float in the rivers and operate almost like rafts (筏), rising and filling with the waters. Historically, they were used to continue growing food during rainy seasons when rivers were filled with water.

The farmers layer the plants about three feet deep, creating a version of raised-bed gardens that float in the water. Then, they plant vegetables inside those rafts. As the raft-plants rot away, they release nutrients, which help feed the vegetable plants.

But as climate change affected the volume of water in those rivers, the researchers wanted to understand whether Bangladesh's floating gardens could be a continuous farming practice. They interviewed farming families and found strong evidence that floating gardens provide stability, both in the amount of food available to feed rural populations and in a farming family's income.

They found that farmers typically use hybrid (杂交) seeds, which must be repurchased each year, to grow a diverse range of vegetables in the floating gardens. The gardens are also sensitive to pests, so farmers end up spending some money on both pesticides and fertilizers. But even with those expenses, they found, benefits outweighed costs. One farmer told the research team that he earns up to four times as much money from the gardens as from traditional rice fields.

However, before gaining profits, farmers often take out high-interest loans (贷款) to cover the investment costs of filling the beds and stocking them with plants. Luckily; there are also lower-interest loans from responsible government or non-governmental organizations, which could ease that burden.

6 . The idea of billions of people going through a few masks a week during this pandemic definitely rings alarm bells, but a team of researchers in Melbourne may have the solution.

They’ve discovered that adding millions of discarded face masks to road-paving (铺路) mixtures would actually lower the cost of the road, while preventing billions of them from landfills. Just one kilometer of road would need three million masks, and the polypropylene (聚丙烯) plastic used to make single-use surgical face masks also increased the flexibility and durability of the road.

The new material is a mixture of about 2% torn masks, with recycled concrete aggregate (RCA)—a material obtained from waste concrete and other minerals from destroyed buildings. This recycled material was found in the study to be ideal for two of the four layers generally required to create roadways. Paving a kilometer of two-way road with the RCA and three million face masks would result in a change of 93 tons of waste from landfills.

The final product then is more resistant to wear than asphalt (沥青), as well as being cheaper too, provided there was a method for collecting masks. The research team did a cost-analysis and found that, at $26 per ton, the RCA was about half the cost of mining raw materials, and as much as a third of the cost of shipping the used masks to a landfill.

The widespread application would be ideal for large infrastructure (基础设施) projects. For example, Washington has the 11th worst roads in terms of unaddressed repairs in the U.S. If the damaged roads in Washington state were repaired with the RCA/mask mixture, it would reuse nearly 10 billion masks, sparing American landfills hundreds of millions of tons of trash.

It’s said that the team is looking for private industry partners or governments willing to give their plastic mask road an opportunity for a large-scale test.

7 . Yoga originated in ancient India some 5,000 years ago. It has since spread across the world to many cultures. In the last few years, yoga has been offering classes aiming at the hearing impaired(听障者).

Most yoga classes are based on a model in which students learn by listening to their teacher's statements. As many yoga positions limit the ability to see the teacher, hearing-impaired participants who rely on lipreading (唇读) or sign language are left on their own during a class.

Recognizing the hearing -impaired are eager to attend yoga classes, one British yoga studio determined to fill the lack. Bethaney Mouzer, a yoga instructor launched Sign Yoga in 2019, with the goal of bringing yoga to people for whom the practice may have previously been forbidden.

Mouzer, who was born to non-hearing parents, is used to existing two worlds. After becoming a yoga teacher in 2015, she fielded requests from many people who were interested in yoga, but struggled to find teachers to accommodate their needs.

At first Mouzer started out small, holding single-day workshops at local studios in Birmingham and Worcester, where she signed continuously throughout the classes. The sessions were an immediate hit, and Mouzer began posting classes online via a Facebook page called Sign Yoga. Finally, once there was enough demand, Mouzer also started teaching in London.

Today, Sign Yoga is a mostly online company, with live Zoom classes and pre - recorded lessons accessible to students, as well as occasional in-person classes held in local parks. Mouzer ran a Deaf Accessible Yoga Teacher Training workshop in May.

10 . Light pollution is a significant but overlooked driver of the rapid decline of insect populations, according to the most comprehensive review of the scientific evidence to date.

Artificial light at night can affect every aspect of insects' lives, the researchers said. "We strongly believe artificial light at night — in combination with habitat loss, chemical pollution.invasive (入侵的) species, and climate change — is driving insect declines, " the scientists concluded after assessing more than 150 studies.

Insect population collapses have been reported around the world, and the first global scientific review published in February, said widespread declines threatened to cause a "catastrophic collapse of nature's ecosystems".

There are thought to be millions of insect species, most still unknown to science, and about half are active at night. Those active in the day may also be disturbed by light at night when they are at rest.

The most familiar impact of light pollution is moths (飞蛾) flapping around a bulb, mistaking it for the moon. Some insects use the polarisation of light to find the water they need to breed, as light waves line up after reflecting from a smooth surface. But artificial light can scupper (使泡汤) this. Insects are important prey (猎物) for many species, but light pollution can tip the balance in favour of the predator if it traps insects around lights. Such increases in predation risk were likely to cause the rapid extinction of affected species, the researchers said.

The researchers said most human-caused threats to insects have analogues in nature, such as climate change and invasive species. But light pollution is particularly hard for insects to deal with.

However, unlike other drivers of decline, light pollution is relatively easy to prevent. Simply turning off lights that are not needed is the most obvious action, he said, while making lights motion-activated also cuts light pollution. Shading lights so only the area needed is lit up is important. It is the same with avoiding blue-white lights, which interfere with daily rhythms. LED lights also offer hope as they can be easily tuned to avoid harmful colours and flicker rates.