1 . As plastic waste increases rapidly around the world, an essential question remains unanswered: What harm, if any, does it cause to human health?

A few years ago, as microplastics began turning up in the organs of fish and shellfish, the concern was focused on the safety of seafood. Shellfish were a particular worry, because in their case, unlike fish, we eat the entire animal — stomach, microplastics and all. In 2017, Belgian scientists announced that seafood lovers could consume up to 11,000 plastic particles (粒子) a year by eating mussels (贻贝), a favorite dish in that country.

By then, however, scientists already understood that plastics continuously fragment small pieces in the environment, tearing over time into fibers even smaller than a strand of human hair — particles are so small that they easily fly in the air. A team at the U.K.’s University of Plymouth decided to compare the threat from eating polluted wild mussels in Scotland to that of breathing air in a typical home. Their conclusion: People will take in more plastic by breathing in or taking tiny, invisible plastic fibers floating in the air around them—fibers from their own clothes, carpets, and soft covering on furniture — than they will by eating the mussels.

So, it wasn’t much of a surprise when, in 2022, scientists from the Netherlands and the U.K, announced they had found tiny plastic particles in living humans, in two places where they hadn’t been seen before: deep inside the lungs of surgical patients, and in the blood of unknown donors. Neither of the two studies answered the question of possible harm. But together they signaled a shift in the focus of concern about plastics toward the cloud of dust particles in the air, some of them are so small that they can get into deep inside the body and even inside cells, in ways that larger microplastics can’t.

Dick Vethaak, a professor of ecotoxicology (生态毒理学), doesn’t consider the results alarming, exactly—“but, yes, we should be concerned. Plastics should not be in your blood.” “We live in a multi-particle world,” he adds, referring to the dust, pollen (花粉), and smog that humans also breathe in every day. “The trick is to figure out how much plastics contribute to that particle burden and what does that mean.”

All Change in Curitiba!

Like many other major world cities, Curitiba in southern Brazil has had to deal with issues such as pollution, poverty, and limited public funding. However, the architect and three-times mayor of the city, Jaime Lerner, has introduced some     1     solutions.

As part of his ‘Master Plan’, Lerner hoped to make the city more environmentally friendly. He initiated a recycling scheme. In return for delivering recyclable rubbish to specified     2     points, residents receive a bag of vegetables or bus tickets. As a result, Curitiba now has one of the highest recycling rates in the world. Lerner also ordered the     3     of 26 urban parks. As well as preventing pollution, these control flooding.

Lerner did not win over all the city’s residents immediately, however. When his plans to     4     part of the centre were passed, local businesses were up in arms, fearing a reduction in profits. Realising he needed to act quickly, Lerner had the     5     of six blocks completed within three days. When a group of motorists attempted to drive through the new pedestrian area, Lerner arranged for local primary schools to hold a painting workshop on the streets. The drivers were forced to turn back. Luckily for Lerner, this rebellion was     6    . The increase in profit rapidly persuaded shop owners to change their minds.

Lerner’s determination helped     7     the Curitiba of today. The average income per capita has risen from a level that was below the Brazilian average in the 1970s to 66% above the average, and surveys indicate high levels of resident satisfaction.

So, is it all just one big success story? In some respects, Curitiba may have been too successful for its own    8    . People and businesses have come to the city, which now has more than 1.8 million residents. This has put the city under enormous stress. Forty years ago, buses transported 54,000 passengers a day. Now the number is 2.3 million. According to some experts, the transport system has reached its     9     efficiency capacity. Following a rise in complaints about the noisy and     10     buses, the service is in decline.

4 . The Man Who Ate his Boots is a fascinating account of expeditions that went wrong. The book examines the 19th century search for a route to Asia by way of the Northwest Passage through the Arctic Ocean. Author Anthony Brandt describes the many attempts by both land and sea that ended in failure and tragedy, including the 1845 expedition led by Sir John Franklin. Brandt shows how these brave, yet sometimes foolish, explorers could have avoided starvation, frostbite, and even death if they had copied the survival techniques of the local Inuit people. Some of the more surprising details the book reveals include:

IGLOOS The explorers, despite repeatedly watching the Inuit build igloos, insisted on using canvas tents. Tents freeze in sub-zero temperatures and give little protection to anyone inside them. If they had learned to build igloos, the explorers would have been warm even in the worst Arctic weather.

SEALSKIN If the explorers had worn sealskin and furs like the Inuit, they wouldn’t have suffered from the frostbite that was common among them, but rare among the Inuit.

DOG TEAMS Why didn’t the British use dog teams to pull their sleds? Pulling sleds themselves was a tradition among many explorers right into the early 20th century. It cost Scott and his men their lives on their return from the South Pole in 1912.

The British did get something right, however, when Captain Edward Parry grew salad vegetables in boxes on board his ship. It was known that fresh vegetables and fresh meat prevented scurvy (坏血病)，although at that time the reason for this (vitamin C) had not been discovered. Parry’s men wouldn’t have been as healthy if they hadn’t eaten the salads.

Why Are Trees Tree-shaped?

6 . In Mumbai, there’s the ceaseless clamor of car homes as drivers edge through traffic. There’s pounding and buzzing from the construction of office towers and apartment blocks. Drumbeats and trumpet melodies spill out from weddings and countless festivals. And it’s all topped off by bellowing (大声吼叫的) street vendors and garbage trucks blasting Bollywood songs. Living in Mumbai requires a huge ______ for noise.

When Sumaira Abdulali began campaigning against noise pollution in India’s financial capital two decades ago, friends, acquaintances and even her lawyers insisted it was ______ . “People told me it’s foolish to even try, because Indians love noise,” she says. “We’re a noisy country.”

But in 2003, Abdulali won a lawsuit seeking to ______ environmental rules that had allowed loud music late into the night during a festival. ______ , the victory led to a ban on loudspeakers within 100 meters of schools, hospitals, courts and places of worship. And she has since won more than a dozen other actions both on her own and via the Awaaz Foundation (awaaz means “noise” in Hindi), which she launched in 2006.

The World Health Organization warns that noise is a top threat to human ______ , affecting not only hearing but also sleep, brain development and cardiovascular health. Abdulali claims Mumbai is the world’s ______ city. A study led by Ritesh Vijay, an expert from India’s National Environmental Engineering Research Institute, did find that noise levels in Mumbai and surrounding areas in 2020 dramatically exceed legal limits.

In recent years, the battle against noise has become increasingly ______ , with Abdulali often facing powerful interests who consider it an inevitable byproduct of growth. With increasing ______ , ever more people are exposed to continuous noise. In a rapidly expanding city such as Mumbai, with a population topping 12 million, demand for housing puts noise rules ______ development plans. Although sound barriers are required for construction projects, they’re expensive, so developers ______ installing them.

Traffic is a tougher problem. Noise on the road can reach 110 decibels (分贝) — a level that can lead to permanent hearing damage after just 15 minutes of exposure, according to the US Centers for Disease Control and Prevention. Luckily, ______ can help in the fight, Vijay says. He suggests devices that measure horn use, which would let officials offer ______ drivers rewards like deductions (扣除) on car insurance. Dynamic signaling, where sensors linked to stoplights detect traffic density, would improve vehicle flow and ______   the urge to resort to horns, he says. Local government also ______ . Mumbai decreed (颁布) India’s first “No-Honking” day in 2008, with police handing out booklets to raise awareness about traffic noise and imposing fines up to 1,000 rupees ($12) on offending motorists.

Far more important is the longer-term impact of the day-to-day noise, so that’s where Vijay believes activists should focus their energy. “In India we celebrate festivals with lots of noise,” he says. “But our ______ noise itself is beyond the allowed limit.”

Scientists have discovered that dogs produce more facial movements when a human is paying attention to them than when they are being ignored or presented with a tasty small piece of food.

The research argues     1     the belief that animal facial expressions are largely unconscious movements, that reflect internal sentiments, rather than a way to communicate.

Their expressions are responsive to humans — not just to other dogs. That shows us how domestication     2    (shape) them.

“Facial expression is often seen as something that is very emotionally driven and is very fixed, and so it isn’t something that animals can change     3    (depend) on their circumstances,” said Bridget Waller, professor of evolutionary psychology at the University of Portsmouth, and an author of the study.

Researchers     4    (involve) in the study published in Scientific Reports, used a video camera to record the facial movements of 24 dogs over a series of experiments     5     a human either faced the animal, or faced away, and presented the dog with a tidbit (小片食物), or did not. The recordings were then examined by the team frame by frame     6    (determine) changes in the facial muscles of the canines.

The results reveal that the dogs produced far more facial expressions when the human was facing the dog, than when they turned away — in particular, the animals were     7    (likely) to show their tongues and raise their inner eyebrows.

But the presence of food had no impact on the animals’ expressions. That suggested canine facial expressions were not just down to excitement, and cast doubt over     8     dogs use their facial expressions to twist their owners around their paws, said Waller.

“We wanted to see if dogs would produce the most facial expressions when they saw the face and the food, because that might then tell us they are trying to intentionally manipulate the human in order to get the food — and we didn’t see that,” said Waller.

The study suggested doggy expressions were not simply the result of internal emotions, but     9     be a mechanism of communication. The team noted their work didn’t show whether dogs simply learn to pull faces when a human pays attention to them, or whether it reflects a deeper connection. But, they said, it was notable that the animals tended to make their eyes appear bigger —     10     trait humans are known to find cute.

The First Space Cat

In a few weeks, space scientists will celebrate a remarkable event — the 60th anniversary of the launch of the first cat into space, an astronautical success that has never been repeated.

In the early 60s, dogs and monkeys were the animals usually used by scientists to find out exactly     1    dangerous the conditions were in outer space. And they were also used to assess if humans     2     survive trips beyond the edge of Earth’s atmosphere.

A total of 14 street cats     3     (gather) at France’s space agency for selection as cat astronauts, but the cats were not given names on purpose in order to prevent scientists from becoming too fond of them. The cat selected to travel to space was simply known     4    C341. C341 flew on a French rocket in October 1963, taking it to a place     5    no cat had gone before.

Then,     6    the news of its flight was announced on 18 October 1963, the French press decided this cat had to have its name. They picked “Felix” after a cartoon cat character, only     7     (discover) that C341 was female, so her name was then adjusted to “Felicette” as a result. In putting Felicette in one of its rockets, France added a new species to the list of animals that scientists     8     (send) into space before. Previously, two garden spiders, Anita and Arebella, had been taken to the Skylab     9    (orbit) around the moon.

“In the 60s,     10    (concern) about the possible danger for a human to be in outer space, scientists and engineers primarily undertook animal space flights to see if they suffered or their lives were threatened by the weightlessness or increased radiation or other effects they might experience up there,” said astronomer Jake Foster at the Royal Observatory Greenwich. “The fact that they did not fail paved the way for humans to begin journeys into space.”

9 . The Grey’s Anatomy doctors are navigating the patients that have kept them on our screens for some 400 episodes of the show. But in this episode, for the first time, the _______ to the drama is the very real issue of climate change. It’s a relatively rare example of the many kinds of climate-related storylines that are typically missing from _______ TV and film worlds. Social scientists argue that climate is a topic that belongs in many kinds of on-screen stories, not just the _______ climate-disaster thriller.

But can seeing the realities of climate change affecting characters on the screen help us relate _______ to the unfolding climate crisis – to cope better, or even change our behavior?

Non-profit storytelling consultancy Good Energy believes it can. It is among a small but growing number of organizations _______ far more TV and film scripts to _______ climate-related storylines. In April 2022, it released its Good Energy Playbook, a set of guidelines for embedding climate change into any on-screen story. It joins other initiatives in drawing attention to the need for film and TV to _______ the numerous ways climate change leaves its mark on our everyday lives.

The Good Energy Playbook’s suggestions are appropriately wide-ranging: characters with climate anxiety and those fighting against injustice; utopian (乌托邦的) narratives that explore climate solutions; storylines that quietly _______ climate references into their characters’ worlds.

The playbook was created by Good Energy founder Anna Jane Joyner, “It started as a personal _______, where I just got on the phone with as many screenwriters as I could,” she says. She quickly learned that writers wanted to talk about climate, but “didn’t really have the support and toolset to be able to do it”.

Many research studies looked at the impact introducing climate stories had on viewers, and found it prompted greater concern about climate change. It also ________ people’s understanding of it and made them more likely to take action to reduce their emissions. ________, science tells us that stories have a power that hard facts often don’t. Research has long established that the human brain finds it easier to understand and remember information delivered as a ________, and has even found that stories can influence behavior.

Climate stories, then, seem like a pretty good idea. But these sorts of narratives have been few and far between. Julie Doyle, professor of media at the University of Brighton in the UK, says climate change has ________ for years to get into any form of fictional film or TV representation. “There’s been a silence around it,” she says.

It’s time to break the climate silence, says Doyle. “Mainstream media has tended to follow rather than lead, and it would be great if mainstream media could lead this.” Day-to-day mentions of climate change in media are especially important because, while blockbuster climate films can have a positive impact on awareness and action, the effect is sadly __________. People can feel inspired to take action in the moment, but the feeling __________ in a matter of weeks.

Lovely Team Members

I fell in love with rhinos when I worked in a zoo in the 80s, and spent much of the next 20 years as the keeper of the largest captive (圈养的) group of rare black rhinos.

Being aggressive and stupid is     1     impresses urban residents about rhinos, but I discovered a group of sensitive, affectionate animals.     2     (weigh) over a ton, black rhinos are unexpectedly alert and have an unpredictable nature. However,     3     care and reassurance (安慰), they can be very trusting.

In the past few years, the number of rhinos has dropped dramatically, during     4     time I have helped look after rhinos being moved to reserves. Last year, I helped on a project to fly five black rhinos to the Serengeti National Park, where they had to be kept captive for a few weeks before     5     (release) into the wild. They lived in “bomas” wooden enclosures with “bedrooms”.

A couple of weeks before their planned release, the sky was filled with smoke and the flames were blowing over it.     6     (make) sure everything was fine, we rushed toward the bomas. I was terrified that the rhinos     7     (catch) fire, so my initial response was to release them. But I couldn’t, because they     8     (not fit) with transmitters (发射器). If I let them out, we would have great difficulty tracking them down. So I dashed back to the bomas and called the rhinos to their “bedrooms”. To my surprise, they moved without hesitation and were     9     (panicky) than I had thought. After half an hour, the wind changed direction and the fire began to die down.

That we and the rhinos had escaped unscathed (未受伤的) was a miracle. The relationship we had built with those lovely animals proved crucial.     10     it, all our work would have been for nothing. The teamwork of everybody there played a large part too and the rhinos were very much part of that team.