A sunflower is a sunflower. A mobile phone is a mobile phone. But can you combine the two to do something for your local environment? As early as next year it may well be possible. When you have finished with your mobile phone you will be able to bury it in a garden or a plant pot and wait for it to flower.

    A biodegradable (生物所能分解的) mobile phone was, this month, introduced by scientists. It is hoped that the new type of phone will encourage consumers to recycle.

    Scientists have come up with a new material over the last five years. It looks like any other plastic and can be hard or soft, and is able to change shape. Over time it can also break down into the soil without giving out any poisonous chemicals. British researchers used the new material to develop a phone cover that contains a sunflower seed. When this new type of cover turns into waste, it forms fertilizers. These feed the seed and help the flower grow.

    Engineers have designed a small transparent (透明的) window to hold the seed. They have made sure it only grows when the phone is throw n away. “We've only put sunflower seeds into the covers so far. But we are working with plant experts to find out which flowers would perform best. Maybe we could put roses in next time.” said one scientist.

    As phone technology is developing so quickly, people are constantly throwing their mobiles away. This means manufacturers are under pressure to find ways of recycling them. Some 650 million mobile phones have been sold this year. Most of them will be throw n away within two years, adding plastic, heavy metal and chemical waste to the environment. A biodegradable cover can offer some relief for nature, according to the scientists.

    “The seed comes out and the flower grows in the pot so you don't have to concern yourself with the phone when you have finished using it,” said Kerry Kirwan. She leads the research team, which is based at the University of Warwick in Britain.

    People often say that there is nothing in the world that can be as great as a mother's love. Some mother expressions mean just that. The phrase "mother lode" comes from mining. It means the place where the largest amount of gold can be found. But now, the term "mother lode" means a rich supply of anything. For example, you might say, "She just graduated from college and struck the mother lode with her new job!"

    When we call something "the mother of all", this means it is the biggest or best of something. Here is an example: "We are going to throw the mother of all parties this weekend. So you have to come!"

    Naturally, the word "mother" can be used to mean to give birth, even to something you cannot touch, such as an idea or wisdom. The saying "necessity is the mother of invention" means that when people really need to do something, they will find a way to do it. And "experience is the mother of wisdom" means that people learn from what happens to them.

    You might think all expressions about mothers are sweet and loving. Not so. A boy who is "tied to his mother's apron strings(围裙带)" is controlled by his mother. We can also call him a "mama's boy". Both of these terms are even more insulting(侮辱人的) if you are talking about a man, not a young boy. It can be a huge mistake for a woman to marry a "mama's boy" who is still "tied to his mother's apron strings".

    A show about mothers would not be complete without talking about the very popular but mysterious "Mother Goose". The short poems and songs that "Mother Goose" wrote are a part of growing up in the United States. Real or not, you could say "Mother Goose" is the mother of all nursery rhyme(童谣) writers.

    They're in restaurants, hotels and homes all over the world. The saltwater aquarium, with its colour fish, bring a piece of the wild into your living room.

    But do you really know where those saltwater fish come from? A full 97 percent, yes, almost all kinds of saltwater fish can't be bred in captivity (人工养殖). They must instead be taken from the ocean. And how is that done?

    Most of the time, with sodium cyanide, it is a harmful chemical compound that many fish collectors in the Philippines, Sri Lanka, and Indonesia use to catch fish. They mix it with water and use it on the fish. Stunned, the fish can then be easily caught.

    What does cyanide do to the fish? There is a scientific study on cyanide's effects. When there is cyanide in water, fish lose their balance and have difficulty breathing. Some fish simply die then and there. Many, many more die on the way to captivity.

    Although cyanide fishing in the Philippines, Sir Lanka, and Indonesia is not allowed, it still happens too often. According to the World wildlife Fund, up to 90 percent of the saltwater fish that enter the US each year are caught this way. The Center for Biological Diversity is calling on the US government to avoid these imports.

    “Compared to many environmental problems now facing the world's oceans, this is one that can easily be solved,” said Nicholas Whipps of the Center. “Because the US is such a powerful market player in this industry, the responsibility to stop this practice falls largely on the United State' shoulders.”

    In the Philippines, private planes bring in cyanide to the fisherman and then take away the live fish. Live fish give the fisherman a better life than dead ones, so more and more fishermen have turned from supplying the fish-for-food trade to the fish-for-aquariums trade.

    The Center for Biological Diversity hopes the government will use the law to turn away cyanide-caught fish and persuade people to buy those only raised in captivity.

    We love the sea. We swim into it, live near it, build beside it, and even imagine about living under the sea. But we're terrified of it, too. For much of our history, we have turned to "hard engineering" to control the marine (海洋) environment and manage its influence on us. We build dams, sea walls and channels. But all these efforts seem to fail. The sea has a habit of taking back its own. And we suffer.

    Johnston, a marine ecologist, is advocating for "blue engineering" ­ the marine version of the "green engineering" movement on land that has seen nations like Singapore building the walls and roofs of the concrete jungle with plant life.

    We are expanding further into the marine environment. This practice does harm lo marine ecosystems. We're loving the sea to death, but we've not been thinking about design of structures (建筑物) with respect to ecology. Some coastal structures create shade, which reduces the growth of seaweed. Bright lights at night contuse species such as turtles. That's why blue engineering comes in.

    Throughout the world people are starting to turn things around. Researchers with the World Harbour Project are creating tiles (瓦片) similar to the natural structures found on rocky shores with 3D printing technology. These make more attractive homes for marine creatures. Researchers are also actively seeding these tiles with local seaweeds and creatures such as the Sydney rock oyster, which is particularly good at improving water quality. Twelve harbours around the world are taking part in this marine tile experiment, each working with their own unique marine life.

    It's a far cry from, he days when huge number, of old tyres were thrown, into the sea to build "artificial reef" (礁石). Those clumsy early attempts are now costing millions to remove, showing just how far we have yet to go in understanding how best to co-habit with the underwater world.

"Someone once asked me, 'What's the tool you would want to give any student'? And I said, 'A mask and snorkel （潜水通气管） set, "' the ocean biologist Thys says in a video. And Thys explains, "Ninety-eight percent of the living space on this planet is the ocean. It's worth a view. "

Thys has devoted her career to seeing the ocean and to helping others watch the great diversity of the underwater world. A big part of what motivates her work is the chance to let people develop a sense of respect for the grandness of the ocean, and to get people to participate in efforts to protect endangered ocean ecosystems. 

Since studying ocean biology, Thys has focused her research on how sea animals live. One animal she particularly studies is the ocean sunfish. "It's so different from any other fish, "says Thys. "It looks like a mistake. Where does the tail go?" Thys adds. "The sunfish provides an entry point to understanding more about the behavior of creatures in the ocean, and about how environmental changes impact underwater ecosystems. "

Thys's work also takes her above ground, where she's looking at ways to create new connections between human populations and natural environments to help address social and environmental challenges. For instance, she's working on nature's effects on mental well-being. 

Thys's passion for her work is evident in every lecture, video, and public appearance she makes. Using the media, Thys encourages people to learn about the ocean and love it. Due to many ocean research projects and activities from the media, Thys is up to her neck in work every day. She could hardly spare plenty of time for a good rest. Thys's devotion to her work as an ocean scientist and ecological warrior is infectious. She's a role model and an inspiring guide to ocean life. 

I was cutting up lettuce in the kitchen when I suddenly remembered watching a video about soaking the lettuce stub (莴苣残余部分) in water to grow a whole new vegetable. So I took out a wide-mouthed cup and placed the stub into it, gave it a little water, and placed it by the window. 

On a snowy morning I noticed the first sign. A first small leaf from its heart spread out. A tiny green flag of hope. Beaten, but not defeated. This lettuce was not done living! Within days, it was impossible to see the cuts where I had removed the leaves. The growth was explosive. And when I lifted the blossoming head out of the cup, tiny root threads fell down, seeking for the earth. 

What is growing here? Lettuce or hope? 

If I were a lettuce in a similar condition, I'd want to skeptically assess where I found myself before committing to full growth. Yet for this lettuce, my inadequate offering of water and a place by a window was enough for it to decide to reclaim itself again. It grew in a cup of water, in faith. This is the heart of this lettuce: alive, strong and fearless. It deserved a name. I decided to call it Monty. 

Monty wanted to grow, as we all do. I think I gave him a little love and freedom. Those two were all he needed to return to himself. I see joy in this lettuce. The return to self is always an expression of joy, which is life itself. This is the tendency of all living things. 

Monty still lives in a cup, but I'm going to transplant him outside. He deserves to become his full self. The only problem I see now is my ability to support Monty. I hope I have enough of a green finger. 

I'm surprised to find myself where I am. Maybe Monty is, too. I have the same choice as he does: give in or start again. The prospect of starting again is discouraging. But my lettuce-friend, Monty, leads the way. I can only hope to be as brave.