1 . In a groundbreaking achievement, a rhino has successfully undergone embryo (胚胎) transfer, marking the first successful use of a method that holds promise for saving the nearly extinct northern white rhino subspecies.

The experiment, conducted with the less endangered southern white rhino subspecies, involved creating an embryo in a lab using eggs and sperm (精子) collected from other rhinos. This embryo was then transferred into a southern white rhino alternative mother in Kenya. Despite the unfortunate death of the alternative mother due to an infection in November 2023, researchers praised the successful embryo transfer and pregnancy (怀孕) as a proof of concept. They are now ready to proceed to the next stage of the project: transferring northern white rhinoembryos.

Professor Thomas Hildebrandt expressed optimism about the findings, highlighting the significance of the successful embryo transfer in demonstrating that frozen and defrosted embryos produced in a lab can survive. This development offers hope for the revival of the northern white rhino population.

However, challenges facing rhino conservation remain significant. While the southern white rhino subspecies and the black rhino species have shown signs of recovery from population declines due to illegal hunting for their horns (牛角), the northern white rhino subspecies is on the edge of extinction. With only two known members left in the world, Najin and her daughter Fatu, both unable to reproduce naturally, and the recent death of the last male white rhino, Sudan, in 2018, urgent action is needed to prevent the extinction of this subspecies. Dr. Jo Shaw, CEO of Save the Rhino International, emphasized the importance of addressing the primary threats facing rhinos worldwide: illegal hunting for their horns and habitat loss due to development. She stressed the need to provide rhinos with the space and security they need to succeed in their natural environment.

While the successful embryo transfer representsa significant advancement in rhino conservation efforts, organized action is required to address the main challenges facing rhino populations worldwide.

4 . Not much trash and almost no plastic actually gets recycled. About a third of U.S. garbage gets recycled, according to the Environmental Protection Agency’s most recent estimate. The rest goes to landfills, which release greenhouse gases into the atmosphere and pollute their surroundings.

To make recycling easier, many U.S. cities don’t ask Americans to separate paper, glass, metal and plastic. ‘They just ask people to put anything recyclable into one bin and let waste plants do the sorting. But waste plants don’t catch everything. AI is now an essential tool for the world’s waste management leaders. Greyparrot, a tech company has already installed more than l00 AI trash spotters in about 50 sorting facilities.

Greyparrot’s device is, basically, a set of visual and infrared (红外线的) cameras hooked up to a computer, which monitors trash as it passes by on a conveyor belt and labels it under 70 categories, from loose bottle caps to books to aluminum cans. Waste plants could connect these AI systems to sorting robots to help them separate trash from recyclables more accurately. They could also use the AI as a quality control system to measure how well they’re sorting trash from recyclables. That could help plant managers adjust their production lines to cover more recyclables, or cheek that a bundle of recyclables is free of pollutants, which would allow them to sell at a higher price.

In the next few years, some recycling companies plan to retrofit (改良) thousands of material- recovery facilities with Al trash - spotting tools. Of these companies, Bollegraaf has built thousands of these facilities, including 340 in North America, accounting for a majority of the recovery plants in the world.

The trash-spotting computers could one day help regulators punish companies that produce tsunamis of non - recyclable packaging because the AI systems are so accurate that they can identify the brands on individual items. Putting the AI tools in thousands of waste plants can raise recycling percentage. If the needle can be moved by even 5 to 10 percent, that would be a phenomenal outcome for greenhouse gas emissions and environmental impact.

7 . Are worms the heroes we didn’t know we needed? Silent, slimy and wriggling (扭动), you might think that worms are good for nothing except bait (诱饵) on the end of a fishing pole.     1    

The British naturalist Charles Darwin said that no other animal has “played such an important part in the history of the world as these lowly organised creatures”. They have lived on Earth for 600 million years and have even survived five mass extinctions.     2    

Earthworms literally move the earth, and this is why farmers love them. As they travel, they aerate (使透气) the soil by loosening, mixing and oxygenating it.     3     They are effectively a small but very efficient plough (犁). But it’s not just earthworms that deserve praise.

In 2022, a group of scientists at the Margarita Salas Centre for Biological Research isolated enzymes (酶) found in wax worm saliva (唾液) which are plastic-eating.     4     It’s hoped that by producing these enzymes on an industry-level scale, we will have a more environmentally friendly way to reduce plastic pollution.

    5     Bloodworms are small sea creatures which press themselves into the mud of the ocean floor. Scientists at the University of California, Santa Barbara have been studying their jaws, which are made up of 10% copper proteins (铜蛋白) and are so strong that they last the worm’s entire five-year lifespan. Because of this research, engineers may start using the jaws as inspiration for the design and manufacture of materials like concrete.

So, next time you see a worm, show it a little respect. They really are changing the world!

10 . Xu Hai’ou has spent most of her life promoting environmental protection work in Beihai, a coastal city in the Guangxi Zhuang autonomous region, by cleaning beaches, protecting mi-grant birds and recycling kitchen waste.

Though her family originally comes from the eastern province of Shandong, the 60-year-old was raised in Guangxi and moved to Beihai for work at age 23, directly after graduating from college. Before she retired, she worked as a reporter for the Guangxi Daily Media Group, a news outlet in the region. In her free time, she became involved in voluntary work.

“In initially, in the 1990s, I helped impoverished children in Guangxi’s rural areas obtain financial aid from donors in Hong Kong, and set up my own NGO in 2004. At the time, it was Beihai’s only nonprofit social organization involved in volunteer work,” she said, “It’s very enjoyable to do this charity work and I have made many friends through it.”

She said her NGO focuses on environmental protection work and organizes a range of voluntary activities, including cleaning up beaches, and protecting mangrove forests and migratory birds.

In 2008, the organization joined a marine life protection event supported by the central government, the UN Environment Programme and the Global Environmental Facility.

Xu and her colleagues at the association arranged a number of voluntary events such as raising awareness of marine biodiversity among local residents and students, and beach-cleaning activities to help promote understanding of the need to protect marine animals and plants.

“Undertaking voluntary activities or charitable work has become my mission, and I want to contribute my own efforts to the nation’s environmental protection work, even if they only produce a small improvement. However, protecting the environment is very hard work. which can’t be done by a single person. I sometimes feel like my ability falls short of my wishes.”

According to Xu, her NGO is currently promoting the classification of waste in Beihai and recycling kitchen waste into compost. “We have mature technologies, but still face difficulties in promoting the program because many residents lack awareness of environmental protection. We hope the government can figure out better ways of managing the garbage after we classify it to make full use of this ‘waste’.”