Most of us associate learning with younger people—kids in school and college or recent graduates early in their careers. But at Udemy, an open university offering online courses, Artist Anneke Camstra is engaged in the pursuit of lifelong learning and displays her potential for teaching. She loves the experience of gaining new knowledge and also loves sharing it with others. “I’m retired, but an artist never retires,” Anneke said. “The last few years on the internet have been a great joy for me. I’ve taken so many Udemy courses, and ifs such a great feeling to get my brain working again. I find just as much satisfaction in teaching animation(动画制作)too.”

She reaches countless people with her online courses and exposes them to what they can accomplish on their own using animation software, such as GoAnimate and PowToon. Her motivation for teaching on Udemy is “to get the tools to the people.”“You can go such a long way to make things that look professional but still have your own voice,” she explained.

Most of Anneke’s students start out thinking they’re not creative and can’t draw. Anneke understands how fear can get in the way of so many things people dream of doing. With her five-day challenge courses, she helps them get over the fear. Anneke loves the impact she has on her students. What makes her more proud of them is that they have gone from their first animation to creating their own works.

She encourages people of all ages, especially older people, to cultivate their curiosity for life. Grandparents, for example, can learn to use GoAnimate and make animations together with their grandkids.

“Tm an older woman, teaching and having fun learning again,” Anneke said, and she wants others later in their lives to catch up with her on this journey.

【推荐1】Every spring, in regions at high altitudes around the world, one of Earth’s tiniest migrations takes place. The migrants are single-celled green algae (海藻); they are relatives to plants growing in the sea, but instead of living in the sea they live in snow. They spend the winter deep in the snow. In the spring, they wake and swim up through flowing streams of melted snow to the surface, dividing and photosynthesizing (进行光合作用) as they go. Then, at the top, they turn red. This creates what scientists call pink snow.

The color comes from astaxanthin (虾青素), a substance that gives some living things their reddish color. The algae produce astaxanthin as a form of sun protection; it absorbs UV light, thereby warming the organisms and thus melting the surrounding snow. “The melting helps them a lot,” said Roman Dial, a biologist at Alaska Pacific University. “The moment there is liquid water on the snow, the algae start growing.”

Pink snow is a perfectly natural phenomenon, but in an age of disappearing glaciers (冰川), it is also problematic. Last year, scientists discovered that the algae turned the snow surface dark, reducing the amount of sunlight reflected by some glaciers in Scandinavia—and increasing the amount of sunlight absorbed—by 30%. The result, as Dial and his colleagues demonstrated in this month’s issue of Nature Geoscience, is faster melting. As in other parts of the warming planet—particularly the Arctic, where scientists fear that melting permafrost (永冻土层) may lead to further climatic changes. Ice sheets are already being darkened by dust and ash, which makes the process of melting faster and provides nutrients for algae growth. As the organisms multiply, they melt even more snow, which allows them to increase in their population again. “It spreads more rapidly than people realize, once it gets established,” Dial said.

Snow algae need snow; when that’s gone, which seems to be the direction of things, the snow algae will go, too. Before the snow algae disappear, though, and while there’s still some glacier left, it’s entirely possible that the last snow we’ll see on Earth will be pink or even red, a wound on Earth.

【推荐2】Germany’s top court (法院) has ruled that parts of the country’s 2019 climate action law must be changed because they don’t do a good job of protecting young people. Nine young people aged 15 to 24 took the government to court over the law. They said that the government’s failure to plan carefully was putting their future lives in danger.

The judges (法官) of Germany’s highest court said climate change will influence young people far more than adults. That’s because climate change will become more serious over time. As young people become adults, they’ll be left to deal with any problems that today’s adults don’t deal with.

In 2019, Germany passed a new law, promising that the country would be producing no more CO2 than the forest can take in by 2050. The law made a plan of action until 2030. But the law didn’t have any plans for climate actions that would be taken between 2031 and 2050.

The court has asked the German government to fix the law by the end of 2022. The climate law will now need to have a plan for the actions that will be taken after 2030.

The German government has said that it will quickly begin working to make the needed changes. One important part of high court decisions like this is that they act as guides or examples for future decisions. This means that in the future, Germany’s lawmakers will be more likely to think about the climate future of young people as they create their laws.

【推荐3】Because of a record drought, the Amazon River drops to the lowest level ever recorded. Smaller river systems that feed into the Amazon River have been drying up, leaving boats stranded (搁浅) and people in remote villages with very little food and water. The port of Manaus, where the Amazon River meets with the smaller river Rio Negro in Brazil, recorded 13.59 m of water on Monday compared to 17.60 m a year ago. That was the lowest level since records began in 1902. It was said the drought had affected 481,000 people so far.

The Brazilian government has blamed the drought on the El Nino climate pattern, which has brought hotter and drier weather. The government said it was expected the drought would last until at least December, when El Nino’s effects are forecast to reach the highest point.

The drought has made it hard to access food, drinking water and medicines, which are usually transported by river. After months without rain, some rainforest villagers were relieved when a Brazilian charity delivered supplies to their community. Some areas could still be reached by canoe, but many boats hadn’t been able to bring supplies along the river and a lot of supplies were being delivered by tractor. The drought also affected the cleanliness of the village’s drinking water. As a result, many children were getting ill and often having fever. Villagers said it wasn’t very good for them because they were practically isolated (隔绝).

El Nino has also affected the animals of the river. More than 100 endangered river dolphins are thought to have died because of high water temperatures. The Amazon rainforest represents about half of the remaining rainforest left on Earth and is home to more than one million species, or a third of all known land plants, animals and insects. About 150—200 billion tons of carbon is stored in the Amazon rainforest, making it important for the health of the whole planet.