1 . A tree planting initiative in Kenya has seen over 30,000 trees being planted. The Green Generation Initiative is a Kenyan charity that has been planting trees to counter climate change and the reduction in forest in the East African nation since 2016.

Founded by climate activist Elizabeth Wathuti, the initiative's primary focus is on developing young climate activists through environmental education in schools and addressing food insecurity in the region through planting fruit trees. Since its foundation, over 30,000 trees have been planted in Kenya, while thousands of school children have not just planted trees but adopted them to ensure that young people learn the importance of acting as a guardian of the health of the environment. The trees have recorded a survival rate of over 98 percent, as they continue growing from young trees to maturity.

Speaking to world leaders at the recent UN Climate Change Conference in Glasgow (COP26)，Elizabeth issued a serious warning about the threat of climate change: “Over two million of Kenyans are facing climate­related starvation. In 2025, half of the world's population will be facing water shortage. By the time I'm 50, the climate crisis will displace over 80 million people in sub­Saharan Africa alone.”

Elizabeth said, “I have been doing what I can.Inspired by the great Wangari Maathai, I founded a tree growing initiative that enhances food security for young Kenyans. So far, we have grown 30，000 fruit trees, providing desperately needed nutrition for thousands of children.” “Every day we see that when we look after the trees, they look after us. We are the adults on this Earth right now, and it is our responsibility to ensure that the children have food and water, ”she added.

6 . Molai grew up in a tiny village in India. The village lay near some wetlands which became his second _______. He learned the value and beauty of _______ there from a very young age. 

When he was 16, Molai began to notice something _______ happening around his home. A flood had hit the area earlier that year and the _______ it caused had driven away a number of birds._______, the number of snakes had declined as well. He _______ that it was because there weren’t enough trees to protect them from the _______. The solution, of course, was to plant trees so the animals could seek _______ during the daytime. He turned to the _______ department for help but was told that nothing would grow there. However, Molai went looking on his own and ________ a nearby island where he began to plant trees.

________ young plants in the dry season was ________ for a lone boy. Molai built at the ________ of each sapling (幼树) a bamboo platform, where he placed earthen pots with small holes to ________ rainwater. The water would then drip (滴落) on the plants below.

Molai ________ to plant trees for the next 37 years. His efforts have resulted in 1,360 acres of naturally-grown land that has become home to many plants and animals.

7 . When John Todd was a child, he loved to explore the woods around his house, observing how nature solved problems. A dirty stream, for example, often became clear after flowing through plants and along rocks where tiny creatures lived. When he got older, John started to wonder if this process could be used to clean up the messes people were making.

After studying agriculture, medicine, and fisheries in college, John went back to observing nature and asking questions. Why can certain plants trap harmful bacteria (细菌)? Which kinds of fish can eat cancer-causing chemicals? With the right combination of animals and plants, he figured, maybe he could clean up waste the way nature did. He decided to build what he would later call an eco-machine.

The task John set for himself was to remove harmful substances from some sludge (污泥). First he constructed a series of clear fiberglass tanks connected to each other. Then he went around to local ponds and streams and brought back some plants and animals. He placed them in the tanks and waited. Little by little, these different kinds of life got used to one another and formed their own ecosystem. After a few weeks, John added the sludge.

He was amazed at the results. The plants and animals in the eco-machine took the sludge as food and began to eat it! Within weeks, it had all been digested, and all that was left was pure water.

Over the years, John has taken on many big jobs. He developed a greenhouse — like facility that treated sewage (污水) from 1,600 homes in South Burlington. He also designed an eco-machine to clean canal water in Fuzhou, a city in southeast China.

“Ecological design” is the name John gives to what he does. “Life on Earth is kind of a box of spare parts for the inventor,” he says. “You put organisms in new relationships and observe what’s happening. Then you let these new systems develop their own ways to self-repair.”