1 . More than 80 percent of global heat is absorbed by the ocean, which has a massive capacity to store and give off heat. High sea-surface temperatures are causing long-term damage to coral reefs (珊瑚礁). Corals are dying. The IPCC (政府间气候变化专门委员会) projects that up to 90 percent of coral reefs could disappear if global warming reaches 1.5℃. Another reason corals are in trouble is because of ocean acidification. Higher carbon dioxide levels have shift ed the chemistry of the ocean, making it more acidic, and corals and sea creatures have trouble growing in acidic conditions.

When ocean water warms, it expands in volume. This is a major cause of the rise in sea levels, along with the water added to the ocean by the melting of land-based glaciers (冰川). The sea level has risen by an average of 20 centimeters since the late 19th century, and the research by scientists studying the last 25 years of satellite data found that the ocean water is rising faster and faster. If it continues at its current rate, the rise in sea level by 2100 will be more than double the current estimates. Sea level rise leads to the destruction of coastal wetlands, flooding and damage to water ecosystems.

Temperature and precipitation (沉淀) are key elements of climate. A warmer climate means that more water rises from both the land and ocean, and a warmer atmosphere holds more of that water. Scientists have noticed that there are more heavy rainfall events. Additionally, higher water temperature in streams, lakes, and rivers lead to lower levels of dissolved oxygen in the water, which impacts the survival and populations of fish and other sea life.

Especially troubling are the extreme weather events that are happening more often around the world. Hurricanes are ramping up in intensity, particularly in North Atlantic. The year 2017 was a busy one for Atlantic hurricanes. Meanwhile, in the western United States, the state of California has had record-setting drought conditions, which began in 2012.

3 . Whenever I order food for delivery, I play a little game to guess how many sets of tableware(餐具)the restaurant will provide with my meal. Sometimes restaurants will throw in two, three or four sets for just one order. But I rarely need any tableware at all, and the waste goes into the trash or collects dust in a kitchen drawer.

Researchers working with Chinese technology group Alibaba tried a simple approach to this problem. Instead of just wastefully doling out tableware, the company required food-delivery customers in some cities in China to pick how many sets of tableware they wanted to receive.The default (默认设置)was set at zero. The result, published today in the journal Science, was a 638% increase in the share of no-tableware orders. If applied across China, researchers found, the approach would save nearly 22 billion sets of plastic tableware. The study doesn’t cover carbon emissions, but it’s safe to say that the impact would be significant. It struck me as a useful reminder of the many low-hanging fruits across the economy that can cut waste, and emissions.

Nudging its customers cost Alibaba nothing more than a few hours of software engineering time and the impact it brought was immense. The concept of nudging comes from the field of behavioral economics known as nudge theory. It suggests that a slight action can encourage good human behavior without the need for policies that limit choice or economic punishment that raises the cost of bad behavior. To nudge customers to eat better, for example, a restaurant might organize its menu by listing healthy options first and bury unhealthy ones at the bottom. More recently, some big companies like Google have also begun to use nudges to advance climate objectives.

Behavioral economics broadly, and nudges more specifically, aren’t without controversy. Some might think it assigns consumers responsibility for addressing environmental challenges. But there is another way to look at it. In the absence of necessary policy—and policy is needed一companies can help encourage a widespread shift of consumer behavior.

And all of that behavioral change can add up. The International Energy Agency found in 2021 that small behavioral changes in energy consumption such as walking instead of driving and adjusting the thermostat could in total shave off 4% of global emissions. The more that companies can do to facilitate such changes, the better.

4 . Open an app at your smart phone and scan the code bar on the garbage can. When you throw garbage into the garbage can, it will show the weight of the garbage and the points you can get from doing so.     1     It will become more popular in the future. Yes, we are talking about the smart garbage can.

    2     The environmental problems have become constant headaches in the development of those cities. Encouraging garbage classification has become an effective way.

In some cities, a variety of multifunctional smart garbage cans are being put into use. In Beijing, for example, a smart garbage can is equipped with an LED screen, which not only shows national policies on garbage classification but also shows the correct steps for garbage sorting. It can also calculate the weight of the garbage and the accumulated points one can get. They can be traded for some articles of daily use.     3     Its body is actually a screen. It is equipped with some Internal sensors. When people throw garbage into it, the internal sensors can automatically tell the types of the garbage. Meanwhile, people can see how to deal with them.     4    

Garbage disposal is a small issue that involves everybody each day. However, it is also a big issue.    5     With smart garbage cans in our daily life, the idea of garbage sorting will become more established. Our dream of building a greener and more beautiful China will come true so long as we start to make small changes right now.

7 . When Malaika Vaz was a kid, living in Goa, India, she was constantly surrounded by nature. Among her childhood experiences, she recalls journeys to the Arctic and Antarctic, climbing mountains, diving, and windsurfing.

At some point in her late teens, Vaz realized adventure didn’t really mean anything if there wasn’t an intention to protect the natural spaces we were exploring in. Motivated by her passion for filmmaking, she began to seek a way that would both satisfy her appetite for adventure and allow her to advocate the protection of the species and ecosystems she interacted with.

Today Vaz wears many hats in the filmmaking world, as a documentary director, producer, and presenter. After falling in love with manta rays (蝠鲼), she discovered they were being hunted illegally and started to dress herself as a seafood trader to get as close as possible to the issue. She traced sellers to figure out why the threatened species were being killed. She shared the shocking details in Peng Yu Sai, her Green Oscar-nominated film on the matter.

The subjects that grab her attention, Vaz admits, run the gamut. When she was asked to define her focus, she replied that she preferred variety. She always argues that the issues she looks into are more interrelated than they may initially appear. “I think that it’s exciting to dive into the different aspects of environmental stories,” she says.

Her work doesn’t stop at recording important stories; she also ensures the message is heard. From Vaz’s viewpoint, real improvement in planetary protection lies in the hands of each of us rather than just those of several environmentalists. “If you’re an engineer and you care about the natural world, you can change the kind of construction materials you use. If you’re a teacher loving nature, you can bring that into the learning for your class.” she says.

As a filmmaker, Vaz believes it’s important to figure out ways that attract the audience who can push for the protection of the natural world.

10 . 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.