1 . While it throws out about 90 pounds of food per person every year, Japan doesn’t rank at the top of the world’s list of wasteful nations. Still, what’s thrown away represents a serious problem for an island nation with limited landfill space and a goal of greater sustainability. Reinvention can offer an alternative. A Japanese company is taking vegetable peels, cooking oil and other used foodstuffs and making entirely different products.

Concrete is the most widely used construction material in the world, and its key element, cement, is a major polluter of greenhouse emissions. So what if a more sustainable alterative were possible by making cement with food waste, which also would help reduce greenhouse emissions from landfills where that waste would otherwise be thrown away? That’s the idea behind Fabula, a Tokyo-based start-up.

Researchers at Fabula created a recipe to make food concrete by drying leftovers and pressing them into a mold (模具) at a high temperature. The company, founded by researchers at the University of Tokyo, began with items commonly thrown away like cabbage and orange peels but found that almost any food item can be used. It now takes mostly coffee grounds and tea leaves to make its cement. The product’s durability depends on the components.

Fabula is currently producing made-to-order household items, such as coasters and dishes, while awaiting its patent. The goal is to make furniture and larger structures once the technology is able to make the cement more durable. Food production companies that can’t avoid generating waste during their processes have reached out to work with the company. “We hope to become a matching service between companies that have food waste and companies who want to build things out of such materials,” said Takuma Oishi, Fabula’s chief commercial officer.

Since the cement is 100 percent eatable, it could create opportunities during disaster response when temporary structures need to be built quickly. The people inside might even turn to them for food. If the technology advances enough, Oishi suggested, someday we may be able “to eat the homes or furniture when necessary”.

2 . Plastic fishing nets, the so-called ghost nets, abandoned yearly in the sea—about 1 million tons—are more than just rubbish; they’re a killer. Fish, sea birds, and turtles get caught in the netting and die, with more species at risk.

Much shocked at this, Pranveer Singh Rathore, a materials-science engineer and materials R&D manager at Samsung, and his team set themselves the task of giving new life to the deadly nets. Last month, Samsung revealed a new line of Galaxy products made in part from recycled plastic fishing nets for the first time. The company estimates this year alone it can recycle over 50 tons of ocean-bound plastic into the key components that will go into its smartphones, tablets, and computers, thus taking a bite out of the global ghost nets problem.

It’s no small task to give waste fishing nets a second act. The nets are typically made of a substance called nylon which tends to dramatically degrade (降解) the longer it sits in the ocean and is exposed to the sun. “This makes it nearly impossible to use abandoned fishing nets directly,” Rathore explains. Besides, high-performance smartphone, tablet, or PC has to be waterproof and can survive severe weather. The nylon in the fishing nets falls far short of that level of durability (耐用).

To deal with that problem, Samsung last summer teamed up with two partners: one to collect and transform the nets into tiny nylon pellets (颗粒) while the other to strengthen their toughness and durability. The end result: The partners hit upon an eco-friendly and high-performance plastic material that’s being used to build the component parts for its latest line of products. For example, two parts of the Galaxy S22 mobile phone—the key bracket and the inner cover—are made of these fishing-net plastic materials. Samsung aims to use even more upcycled materials in future product lines.

“That’s the hope for the globe and our mission,” Rathore smiles.

4 . Bioluminescence (生物发光) is a natural phenomenon wherein a chemical reaction within an organism’s body produces light. It can be found in many places in nature — fireflies, some mushrooms — but mostly in the deep sea.

Recently, Rambouillet, a small historic French town, has teamed up with a company called Glowee to turn the city into a full-scale bioluminescence laboratory. The goal is to change the way in which cities use light. The company uses marine (海的) bacteria harvested from the coast of France. It makes some of the town’s public light up in the cool blue of bioluminescence.

These bioluminescent bacteria are stored in a seawater filled tube, giving the bacteria room to float around and light up. The light provided by the bacteria is part of their natural metabolism, so producing the light requires no energy other than that which is needed to feed the organisms. This makes it much more environmentally friendly and sustainable than electric light, which consumes a huge amount of non-renewable energy.

“On the way to lighting up the world with bioluminescence, you have to feed the bacteria and add water as they grow. That’s not so easy. The phenomenon will be very temperature-dependent and I doubt that it will work in the winter. Also, bioluminescence is not very bright compared to electrical lighting, though they have improved the light intensity,” Carl Johnson, a professor from Vanderbilt University said.

One potential solution to these issues — and one that Glowee is looking into — is to remove the biological aspect of the whole process. Theoretically, luciferase (荧光素酶) can be removed from the bacteria and used to create light instead of the bacteria itself. Because luciferase is non-living, it doesn’t need to be fed. Creating new means of sustainable lighting is a way of being environmentally friendly without plunging the earth back into darkness.

The world witnessed what was described     1     “Chongqing speed” in people’s united action in China’s Chongqing that put out over 10 forest fires in less than 10 days.

On August 17, a historic heat wave caused forest fires     2     (break) out in the mountain city. Under the leadership of China’s emergency management authorities, great efforts from firefighters, police and tens of thousands of volunteers     3     (pay) off and all open fires were completely put out on August 26.

In the following days, numerous stories, pictures and videos regarding this fire rescue     4     (share) on China’s social media. A video that showed a herringbone (人字形) of yellow flame of fire and a line of white light coming from the headlamps on the rescuers in the night view was     5     striking that it became     6     instant hit.

    7     put out the fire was a “Great Human Wall” that was formed by the organization and support personnel under the mountain, the transport teams     8     (deliver) materials along the way, and the firefighting troops on the mountain top.

Among them, Generation Z, classified as those born in the mid-90s to early 2000s, played a     9     (remarkable) important role in the whole rescue work. These young group rushed to the frontline of the fire scene without any hesitation, demonstrating the hope and strength of China’s young generation with their bravery, wisdom and     10     (cooperate).

9 . Scientists today are concerned about the growing number of species in the world that may soon become extinct. The United Nations, along with many governments, are trying to save these endangered species. To help resolve this issue, scientists have been trying to learn why species become endangered.

In the United States, loss of habitats is the main reason for species becoming endangered. As populations grow and cities or towns expand, nature is destroyed and the ecosystem is affected. Even small changes in one part of an ecosystem can have a big impact on another part of it. For example, deforestation may result in a change in ground temperature, which may kill off a certain kind of plant in the forest. Animals that eat this plant may suddenly find that there is no available food so they starve to death.

Another possible cause of endangered or extinct species is climate change and rising sea levels. As the Earth gets warmer, this has profound effects on animal and plant life everywhere. For example, rising sea levels make coastal areas unfit for birds to live in. Warmer temperatures melt the ice where polar bears live, wrecking their habitat and making it harder for them to find food. The rising seas also make it harder for polar bears to swim from the cold waters to frozen packs of ice so many of them drown.

There are several ways that people are trying to help endangered species recover. Ecologists study different species and try to find out more information about them to try and help. In Finland, for example, scientists found that a a decrease in the number of bogs(沼泽) was responsible for the falling butterfly population. Once they understood this, they could manage the butterfly population and help it recover. Governments are also passing laws to protect endangered animals. One example of this is an area near Hawaii with a seriously low fish population. The United States’ government has made it illegal for fishing boats to enter this area.