4 . A lunch break – it’s an important and often necessary part of our working or school day.   And now we’re spoilt (惯坏) with a lot of places to buy our lunch from, all offering attractive dishes and  sandwiches to eat on the go.

But our appetite for buying our lunchtime fare is not just costing us money, there might be a cost in terms of damaging our planet too. Just grabbing a sandwich, crisps and maybe a cake and coffee can produce at least four items of waste. Paper boxes, cups, wrappers and plastic knives and forks are all part of our disposable (一次性的) feast in addition to the food waste we create. Some experts say throwing away food, which produces methane (甲烷) as it rots, is a bigger cause of climate change than plastics.

But regardless of what causes the most damage, the solution, according to an environmental campaign group called Hubbub, is to eat packed lunches. Tessa Tricks from the group says “People are saying that they are buying food to take out because life has got busier.” And she says people think they are being more efficient; but she argues that it's usually healthier and cheaper to make your own lunch. It means you can eat the things you really want and make the quantity that you actually need.

Of course, preparing your lunch is another thing to fit into your morning scramble (忙乱) of getting ready for work, so if you haven’t got time and you are going to buy lunch, an alternative that Hubbub suggests is to take your own container to a shop and ask them to put your food in it. The idea of using reusable coffee cups for hot drinks and refilling water bottles has already proved successful, so this could be another step in the right direction.

6 . Kevin Randall, a teacher,who teaches biology at Grandville High School,runs the environmental club at the high school,which has around 2,000 students.The club is known as the GHS Green Team,and it aims to raise awareness among students and teachers about sustainability(持续性).It also works on projects to reduce the environmental footprint of the building itself.

One of the club's recent projects focused on reducing waste in the school cafeteria.Randall said their cafeteria supervisor told them that the school went through 54,000 plastic forks every year.The club applied for a financial help,built recycling centers for the cafeteria,and purchased metal silverware.

And now every student uses a durable metal fork or a spoon instead of disposables.(一次性用品),“and that's just one way we're trying to capture the low-hanging fruit,if you will,"Randall said.

The efforts of Randall and his students have earned Grandville High School the Michigan Green School certification from the state.In addition to their work reducing waste in the cafeteria, the GHS Green Team has also built a garden with flowers and vegetables on campus,and leads cleanups on site and out in the community.Over the years,Randall and his students have also been working on raising money to install solar panels(太阳能板) on the roof of the high school.

Randall said he was motivated to take the lead on environmental issues for his school because he wanted his students to have someone to turn to in the building who understands what's at stake(利害攸关）when it comes to climate change.

＂And I also felt like I needed to do more in my life for my own two children at home," Randall added,"They need to know that their dad is working as hard as he can to reduce the effects of climate change,and to spread the word,and to make sure that other students out there are learning about this just the way they are at home."

A       1     (library) in Indonesia’s Java island is lending books to children in exchange for trash they collect in a novel way to clean up the environment and get the kids to read more. Each weekday Raden rides her three wheeler with books       2     (pack) up at the back for children in Muntang village in exchange   for   plastic cups, bags and other waste.

She told Reuters she is helping cultivate reading in the kids as well make them aware     3    the environment. As soon as she shows up, little children, many of whom     4     (accompany) by their mothers, surround her “Trash Library” and clamour for the books.

They are all carrying trash bags and Raden’s three-wheeler quickly fills up with them as the books fly out. She’s happy the kids are going to spend     5     (little) time on online games as a result. “Let us build a culture of literacy from young age to mitigate the harm of the online world,” Raden said. “We should also take care of our waste in order to fight climate change and     6    (save) the earth from trash,” Raden said.

She collects about 100 kg of waste     7     week, which is then sorted out by her       8     (colleague) and sent for recycling or sold. She has a stock of 6,000 books to lend and wants to take the mobile service to     9    (neighbour) areas as well.

The literacy rate (识字率) for above-15-year-olds in Indonesia is around 96 percent,     10    a September report by the World Bank warned that the pandemic will leave more than 80% of 15-year-olds below the minimum reading proficiency level(熟练程度).

9 . The early life of the green sea turtle (海龟) is full of danger. Only one in 1,000 baby sea turtles survive to adulthood (成年). From its home in the sand, it breaks its egg with an egg tooth. Its mother is not there to help it. Instead, it is greeted by crabs, coyotes, and dogs waiting to eat it for dinner. To survive, the baby turtle must hide in the sand until night. Then, it moves slowly to the sea.

The small turtle must swim hard to reach the ocean waters. In the sea, it tries hard to find food. It must also keep itself from being food for fish.

As dangerous as the sea turtle’s life is in the natural world, its most dangerous enemies are humans. The rubbish left by humans in the ocean causes problems for the small green sea turtle. A little turtle might eat a piece of plastic (塑料) in the sea. It might also eat oil on the ocean’s surface. Young turtles also get caught in fishing nets. There are laws against hunting sea turtles. Still, many are hunted, both for their meat and for their shells (壳). All of these dangers must be prevented.

Sea turtles that do survive to grow into adulthood go through many changes. For example, adult green sea turtles weigh about 500 pounds. They stop eating jellyfish and other meat and eat only plants. And they may plan a trip to go back home again. A mother sea turtle goes back to the beach where she was born. This is the only place where she will lay eggs. Even if it has been forty years since she was a baby, she always knows her way back home.

10 . Rather than continue living a comfortable urban life, this British family has sold their London home in favor of launching the world’s smallest nature reserve to save a nation’s coral reef system. Karolina and Barry Seath—along with their two young daughters—are preparing to move to an island in the Seychelles (非洲塞舌尔群岛)measuring just 1,300 feet long by 980 feet wide (400 by 300 meters).

They’ve launched a charity and teamed up with(与……合作)local biologists in an effort to bring the coral reefs back to life in the smallest African country, which have been almost wiped out by rising sea temperatures. Their land-based coral farm will be only the second of its kind in the world, the other being on Australia’s Great Barrier Reef, to specialize in regrowing coral to restore the reefs.

47-year-old Barry, who is a former policeman, said, “We are just a normal husband, wife and two kids, living the sort of life that most others do, but we felt the need to make a positive change for ourselves, our children, and the world we had largely taken for granted.”

Over the course of several vacations to the Seychelles, the Seaths witnessed the gradual deterioration(恶化)of the reefs. “Every time we visited, we noticed the coral was getting worse and worse,” said Barry. “All the tourists say the same thing. They love the beaches but are really disappointed with the coral.”

Barry felt it was time to make a change and show his daughters an alternative way of eco-friendly living. He then teamed up with experts at the Marine Conservation Society Seychelles in order to develop the facility. Once it is complete, it will be the first large-scale, land-based coral farm in the Indian Ocean. The eco-warriors hope to use the facility to grow around 10,000 corals per year. Barry said, “Our long-term goal is to show everyone that—with just a relatively small investment—you can have a big positive influence on the marine environment.”