1 . The Twenty-three-year-old Mumbai girl Vidhi Bubna is offering India’s first and only diving grant to explore the marine ecosystem.

Vidhi’s first diving experience turned out to be a heartbreaking one. While she expected a lot of colors underwater as she had seen on TV, Vidhi came across all white corals (珊瑚), which means they are almost dead from being bleached (褪色).

“It was very sad and I just started crying after coming out of the water,” she says.

Vidhi, an economics graduate from Ashoka University, did not enjoy working with numbers and turned to writing about social issues, including women’s rights and minority issues.

As an adventure lover, Vidhi went diving to explore the underwater beauty last year. Her disappointment at seeing dying corals led to the start of Coral Warriors, anon-profit organization that aims to raise awareness of marine protection and climate change.

“Nobody knows about climate change till they see it,” Vidhi says. The Mumbai-based organisation offers India’s first and only diving grant. The grant sponsors level-one scuba diving education in any location of their choice in India. While there is no specific standard, Vidhi says the selection process is strict, choosing candidates who are passionate about climate change and seeing that they do something of their choice. Four candidates have been awarded the grant so far and the organisation hopes to find at least five people every year.

“After the candidates return, we expect them to work on a climate change project of their choice, create communities, and work to create awareness and drive action-centric projects,” she explains.

Prior to starting coral warriors, Vidhi was hosting free online workshops to spread awareness of marine biodiversity and climate change, and has reached about 5, 000 people through them.

As a next step, Vidhi is planning to work on documentaries with high-quality underwater images and videos, considering not many can afford or have the courage to go diving to see what is happening underwater.

2 . People today are not unfamiliar with term such as "going eco-friendly" and "sustainable lifestyle". However, there exists a group of sceptics（怀疑论者）who believe that going eco-friendly is merely a fad（一时的风尚）. I disagree with this viewpoint, Going eco-friendly is not merely a fad and it does, in fact, change the beliefs and attitudes of people.

The long-term presence of environmental organisations shows the efforts that people have made towards going eco-friendly. Organisations such as World Wildlife Fund advocate people to go eco-friendly. The high involvement of the organisations and the participants is thus a strong indicator that going eco-friendly is not merely a fad but a trend that can last decades.

Another strong indicator is the emergence of sustainable products in many industries, such as organic produce and electric vehicles. The consumer demand, coupled with eco-conscious（环保意识的）businesses, is behind the sharp increase in such products. This shows a shift in the beliefs and attitudes of people towards adopting a sustainable lifestyle. Thus, it seems quite certain that going eco-friendly is not merely a fad.

While some people who broadcast their eco-friendly practices are criticised for just hoping to project an eco-conscious image, there are a number of celebrities who have been practising the zero-waste lifestyle for years. For those who do so for years, and not mere days or months, it is indeed a commitment that can only come with a true change in beliefs and attitudes towards caring for the earth.

The call to save the earth looks set to stay. With the development of technology and the appearance of many platforms advocating going green, people are more willing to change their beliefs and attitudes when they can learn about and appreciate the positive impact of the work of different environmental organisations and individuals. It is hoped that these effects will go a long way in ensuring that our planet will remain a suitable place to live in.

3 . Young students can, and do, make a big difference. As an educator, you have the opportunity to spark (触发) a passion in students that will drive them to do their part to take care of the Earth. Here are activities you could add to your lesson plans to inspire your students on Earth Day:

Make signs for school and at home

Sometimes we just need a little reminder to help us change our habits. Have students think about what they can do at school and at home to help the environment and how they can encourage others to change their habits.

Make a video or presentation urging others to take action

Students can make a bigger impact if they influence others to do their part to protect the environment. Putting together a video or presentation also helps them internalize the material itself — they need to understand it before they can explain it to others. Presentations can be given in the classroom or even to the whole school. Eventually, they may be able to present their lessons and research at a local conference.

Show them examples of other students making a real difference

It's important for students to see examples of young environmentalists so they know they don't need to wait until they're older to make a difference. Learning about the work these young people are doing can give your students new ideas for how to protect the environment. It can open the door of possibilities for how to think about finding solutions to problems they can help solve.

Earth Day isn't just on April 22. It's every day. How will you celebrate Earth Day and help students make a difference year-round?

5 . In the modern era, it may come as a surprise that the fashion industry is one of the most polluting industries, especially when it comes to carbon emissions. However, ever-changing fashion trends persuade consumers into buying new pieces and getting rid of old clothing that’s no longer considered fashionable. With trends moving at breakneck speed, we’re buying more clothes and wearing them for less time.

Sustainable fashion has been on the rise in recent years, but it’s undeniable that sustainable companies like Girfriend Collective, and Organic Basics are out of most people’s price ranges. Instead, fast-fashion companies have the advantage of low prices. So most people tend to choose low prices over sustainability, particularly when they’re not directly dealing with the impacts of clothing pollution. But how can people, buy sustainable clothing when it’s not affordable?

Of course, the best way is not to buy any new clothes. However, saving up to buy higher quality, more sustainable garments and then wearing them for many years are healthier for the environment. A similar resolution is owning some basic garments and a few statement pieces in what’s called a “capsule wardrobe”. We can combine our pieces in different ways to get various new outfits that still feel stylish and don’t generate waste.

Buying secondhand clothing is also a great way to be sustainable at a lower cost. It should be noted that some new websites and apps like Depop and Mercari allow consumers to buy specific items of secondhand clothing. They also offer a wide selection for a price more comparable to physical stores.

There is something else to be concerned with staying stylish and sustainable. With the rise of social media, the pressure to “fit in” has risen, causing people to focus on fashion feeling. But, honestly, wearing what suits us will make us look good, and the earth will acknowledge us, too.

7 . Warming seas across the globe are endangering coral reefs (珊瑚礁), a key ecosystem that supports marine life to live and thrive. As a possible way to save them from extinction, scientists have recently frozen and revived groups of adult corals for the first time, according to a recent study.

Freezing biological materials, or “cryopreserving” them, refers to keeping them in a deep freeze for long periods without affecting the cell’s viability (活性), according to the Science Times website.

This method usually cools them to very low temperatures, commonly to -196℃. Since cells would normally die at such a low temperature due to the formation of ice inside, scientists need to monitor the freezing rate and choose the freezing medium carefully.       

Researchers in the US experimented with freezing pea-sized pieces of a common coral in Hawaii. After removing the microbes on the corals, they sealed the corals in metal containers filled with a chemical solution that partially dehydrated (脱水) them and helped control ice growth.

When the corals reached a temperature of around -200℃, the remaining water in the corals solidified into a glassy form. The corals were still alive, with their life-driving functions becoming extremely slow. After being cryopreserved for a few minutes, the researchers pulled the corals out and placed them in warm water. In two minutes, they started consuming oxygen — a sign of them staying alive.

Previously, researchers had already successfully cryopreserved coral larvae (幼虫), according to a study in 2018. However, the larvae can only be collected when corals lay eggs, which happens just a few nights each year. “That’s putting a lot of eggs in one basket,” US marine scientist Liza Roger told Science News.

This breakthrough offers more hope to the world’s corals, said Roger. However, there’s more work to be done. A few days after thawing (解冻), the corals became “stressed out” from the process and were killed by the bacteria they normally live in harmony with. The researchers are working on using antibiotics to help them survive for a longer period of time.

Over and over at the UN climate summit in Glasgow, world leaders have stressed the need     1     (limit) global warming to 1. 5 degrees Celsius. Experts have said crossing the 1. 5 ℃threshold(界限）risks     2     （release) far more severe climate change effects on people, wildlife and ecosystems. Preventing it     3     (require) almost halving global CO₂ emissions(排放) by 2030 from 2010 levels and cutting them to net-zero by 2050.

Already, the world has heated to around 1. 1℃ above pre-industrial levels. Each of the last four decades was     4     (hot) than any decade since 1850. “We never had such a global warming in only a few decades,” said climate     5     (science) Daniela Jacob at the Climate Service Center Germany.

More warming to 1. 5 ℃ and beyond will     6     (worse) such impacts. For example, heatwaves would become both more frequent and more severe. A warmer atmosphere can also hold more moisture(水分), resulting in more extreme rainfall     7     raises flood risks. It also increases evaporation, leading to more intense droughts.

“At 1. 5 ℃, there’s     8     good chance that we can keep most of the Greenland and west Antarctic ice sheet     9     collapsing,” said climate expert Michael Mann at Pennsylvania State University. That would help limit sea level rise to a few     10     (foot) by the end of the century.

9 . If you live in one of the 40 million American households with a gas stove, it could be leaking even when it’s turned off.

According to a new study from Stanford scientists, many stoves are constantly giving out gases that can warm the planet and pose serious health risks when breathed in. The research found methane missions from gas stoves across the United States are roughly equal to the carbon dioxide released by half a million gas-powered cars in a year.

To estimate the impact of these emissions, researchers measured three key gases from stoves in 53 homes across seven California counties. The team chose two gases — methane and carbon dioxide — because of their contribution to climate change, and selected nitrogen oxides because of their known risk to human health. The scientists set up plastic dividing walls between the kitchens and other rooms and used instruments that measure wavelengths of light to determine the concentration of certain gases.

The team estimated that stoves release between 0.8 and 1.3 percent of the natural gas they consume as unburned methane. To their surprise, they found that more than three-quarters of the methane emissions happened when both old and new gas stoves were turned off. “Over a 20-year time scale, the global warming potential of methane leaks is 86 times greater than carbon dioxide,” Stanford reports.

The most significant health risks happen when the stove is lit, the authors note, because the process creates nitrogen dioxide as a byproduct. Increasing airflow by using a range hood can help reduce the personal health risk of natural gas-burning appliances, but most individuals report rarely using their ventilation system.

In a small kitchen, it only took a few minutes of unventilated stove use to generate emissions levels above national health standards. According to a meta-analysis from 2013, children living in homes with gas stoves were 42 percent more likely to experience symptoms associated with asthma, and 24 percent more likely to be diagnosed with lifetime asthma.

In addition to health risks, natural gas burning stoves also endanger the planet by releasing methane. The results of the study have furled efforts by scientists and activists to encourage Americans to switch to all-electric stoves and appliances.