1 . A recent study has found that using wood for construction instead of concrete (混凝土) and steel can reduce emissions (排放). But Tim Searchinger at Princeton University says many of these studies are based on the false foundation that harvesting wood is carbon neutral (碳中和). “Only a small percentage of the wood gets into a timber (木料) product, and a part of that gets into a timber product that can replace concrete and steel in a building,” he says. Efficiencies vary in different countries, but large amounts of a harvested tree are left to be divided into parts, used in short-lived products like paper or burned for energy, all of which generate emissions.

In a report for the World Resources Institute, Searchinger and his colleagues have modelled (塑造) how using more wood for construction would affect emissions between 2010 and 2050, accounting for the emissions from harvesting the wood. They considered various types of forests and parts of wood going towards construction. They also factored in the emissions savings from replacing concrete and steel.

Under some circumstances, the researchers found significant emissions reductions. But each case required what they considered an unrealistically high portion (份额) of the wood going towards construction, as well as rapid growth only seen in warmer places, like Brazil. In general, they found a large increase in global demand for wood would probably lead to rising emissions for decades. Accounting for emissions in this way, the researchers reported in a related paper that increasing forest harvests between 2010 and 2050 would add emissions equal to roughly 10 percent of total annual emissions.

Ali Amiri at Aalto University in Finland says the report’s conclusions about emissions from rising demand are probably correct, but the story is different for wood we already harvest. “Boosting the efficiency of current harvests and using more wood for longer lived purposes than paper would cut emissions,” he says. “We cannot just say we should stop using wood.”

5 . When I think about ducks, I picture my mother’s pets. She saved Lucy and Fran from a very wet area when I was 16 years old. The little ducks were weak and sick. My mother helped them to get healthy.

Lucy and Fran lived in a large box in the garage. They became family pets. They were members of our family. Lucy followed me around. She quacked (嘎嘎叫) and quacked. She liked attention.

My brother Tim read everything he could find about ducks. He learned to care for our pets. He made sure that the box in the garage was fit for our pets. It had a heat lamp and a feeder. He gave them water and fresh straw each day. What a hit!   Lucy and Fran loved their house. They quacked to say, “Thank you!”

On a rainy morning, Lucy walked near me to the mailbox. She walked so close that we knocked each other. I fell into a big mud hole. All the letters from the mailbox got wet. They were covered with muddy, brown water.

What’s worse, Tim watched from the window. When I got back into the house, he was on the kitchen floor holding the sides of his stomach. He laughed there.

I stomped (跺脚) my feet and threw up my arms. My mom calmly listened to me shout. “It’s okay, honey. If you prefer to, you can trade beds with the ducks!” she comforted.

With that in mind, I went to the garage and made my peace with the ducks. My own bed looked a lot better than their straw and heat lamp.

8 . In my early teens, I was once given a film camera as a gift . On receiving it, I jumped on my bike, headed to Wimbledon Common and took photos, just for me: photos of trees and wildlife. I was out all day. On my way home I spotted a tree lit up by street lighting and tried to capture its beauty. Rushing home, I put the spent film in a special little envelope and sent it off to a photography store, desperate to see how it would come out. I took many photos then and loved the fact that when you processed your film you got back colour photos which froze the precious moments, gently encouraging the hobby and the payments for processing.

As I grew into adulthood, that simple, deep happiness gradually faded away. One weekend when I was busy answering the work calls, my eyes caught a box in the corner of the room. I suddenly felt a sense of sadness. The stress growing over these years had pushed the camera from beside my pillow to the box in the corner. I thought I needed a change.

I took out the camera and dusted it down. It was a great joy that it still worked. I bought new film and took the camera everywhere I went. Now it is always on hand to accompany me on journeys, to allow me time to myself. Even if the day is full and busy, I can seize some moments for myself to take photos, to observe the world around me.

The wall of my room now holds all my camera equipment on display, along with photos I've taken. To me, the room represents how I’ve found happiness: by reconnecting to the younger part of myself I laid aside, by allowing room in my life for pleasure to exist, and by creating an environment that allows opportunities for delight.

9 . As a high school student, you’re likely used to learning through reading textbooks.     1     This lies at the heart of “experiential (由经验得来的) appreciation”, a philosophy that encourages you to engage directly with the world around you. It’s about learning from real-life experiences, and discovering a more profound and engaging way to learn.

To practice experiential appreciation, you can start by getting involved in hands-on activities related to your subjects. They will provide a firsthand understanding of the concepts you’re studying, making learning active and meaningful. So, try joining a sports team, picking up a paintbrush, or taking part in a local charity event.     2    

As you dive deeper, immerse (沉浸) yourself fully in the surroundings and activities. When you’re in nature, don’t just look around.     3     Touching the leaves, feeling the wind and listening to the birds can enrich your learning and make each moment more memorable.

    4     After trying something new, ask yourself what you learned and how it made you feel. Write in a journal or discuss it with friends. This self-discovery turns experiences into life lessons and offers a deeper understanding of the world.

Experiential appreciation transforms learning from a task to be completed into a journey to be treasured.     5     So, explore the world around you, let every experience shape you, and discover the endless possibilities that await. This is the core of true learning, where every moment is a step towards a richer, more enlightened life.