The Sanjiangyuan National Park, China's first experimental national park, has been established to protect the local environment. The area is known as the country's "water tower" because it houses the headwaters of the three great rivers of the country: the Yangtze, the Yellow and the Lancang rivers.

Covering a total area of 123,100 square kilometers, the national park emphasizes the protection of the entire ecosystem, including all of the local natural resources such as wild animals, water, grassland and forests.

Since the national park started its trial operation in 2016, locals have been called on to help protect and improve the environment. Their work includes patrolling (巡逻) the grassland as well as monitoring and rescuing the park's wildlife. To date, there are 17,211 rangers (护林人) operating in the national park.

Kunsang, now 39 years old, is a Tibetan herdsman (牧人) turned park ranger for the headwaters of the Yellow River in the national park. On November 16^th, 2020, Kunsang put his life at risk while attempting to save a wolf trapped in a broken ice patch on a lake. Braving temperatures of minus 10 degrees Celsius, Kunsang rushed over to the wolf and pulled the wild animal out from the icy opening on the frozen lake with the help of his colleague.

The efforts of rangers including Kunsang are paying off, and the national park has seen its wild animal populations bounce back apparently in recent years. Hoh Xil (Kekexili) National Nature Reserve, one of the largest no man's lands in China and a part of the Sanjiangyuan National Park, is now home to more than 70,000 Tibetan antelopes, said Wang Xiangguo, deputy director of the park. The official explained that the population numbers for the rare species, which is under first-class state protection in the country, once declined sharply to no fewer than 20,000 due to the impacts of illegal hunting.

Levi Draheim, 11 years old, and 20 other young people have accused(控告)the us encouraging the climate change. For more than a century, human activities have been increasing the amount of greenhouse gases in the atmosphere. That has caused a host of effects globally, from changes in weather to ice melting at the poles.

Levi lives in Satellite Beach,Fla. He once had to leave his home because of strong storms. He rains flooded the town’s streets. And he had trouble breathing during red tides, which can develop wt harmful ocean algae(海藻)grow out of control.

Climate change is making these events more frequent. Levi and his family also have another climate-change-related problem. Sea level is rising. “If climate change worsens, the island that I live or will be gone,” he explained.

The young people say the US government allowed the use of fossil fuels(矿物燃料). Burning those fuels gives off greenhouse gases, driving climate change. The youths want the government to solve the problem of pollution. So they took the government to court in 2015.

The case has had several hold-ups. In the beginning, the government asked the trial court(初审法庭) to refuse to accept the case. The court didn’t do that. Then they turned to the Ninth Circuit Court of Appeals. That court said the case could go ahead, and the Supreme Court agreed. Both sides did work to get ready for trial. But the government again tried to get the case thrown out without a trial.

Finally, trial was set to start on October 29, 2018. But on October 19; the US Supreme Court Chief Justice John Roberts told the trial court to hold up. The youths’ lawyers objected. On November 2, the Supreme Court finally agreed that the trial could go forward. Right now, it is hard to say when that what happen.

Nature has the power to alter an element’s identity with time and space. This is evident by the transformative effect Britain’s deep coal mines have been showing after decades of being one of the biggest reasons for pollution. Now, they’re being employed to supply green energy to the town of Gateshead. The town is the first place to experience something like this in the country, but the success of the phenomenon has encouraged the authorities to apply it to other towns.

In 2021, coal was just producing 2% of electricity in the UK. Most of the electricity in the country is being supplied through oil and gas. This has resulted in massive abandoned coal mines all across the country. As years went by, these mines were flooded with water, making it a source of geothermal（地热的） energy, which is used to generate heat and electricity. Gateshead hosts such a mine in its town, whose council, therefore, launched a mine water project in March 2023.

The authorities put in a large central heat pump in the mine. Mine water can often sit with a temperature of 45℃. The water is then pumped using appliances to home heat pumps. The process increases the temperature further. The water then goes ahead and warms up the interior space and home water supply. After the heat from the water has been used, it’s sent back to the mine where it again goes through the same process. The project has been successful in supplying low-carbon heating to 350 high-rise buildings, a college and several office buildings.

“Recovering heat from mine water below the ground within abandoned coal mines provides an exciting opportunity to generate a low-carbon secure supply of heat, benefitting people living or working in buildings on the coalfields,” said Gareth Farr, head of heat and by-product innovation at the Coal Authority.

The water resources through the mines are estimated to be two billion cubic meters or half the amount of water in Loch Ness. Farr added, “With many millions of people living upon abandoned coalfields in Great Britain, the potential for mine water heat could be significant.”