把剩食做成堆肥，为什么比丢垃圾更能减碳（避免填埋甲烷）？
Why does composting scraps cut more carbon than trashing them (avoiding landfill methane)?
厨余在填埋场缺氧分解会产生甲烷，其百年增温潜势约为 CO2 的 28–34 倍。堆肥让有机物好氧腐熟成土壤改良剂，既避免强温室气体，又把碳留在地里。
In landfills, food waste decomposes anaerobically into methane, about 28–34 times stronger than CO2 over a century. Composting aerobically turns it into soil amendment, avoiding that gas and keeping carbon in the ground.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#堆肥 #甲烷 #填埋
阳台种植用厨余堆肥，怎么避免招虫发臭？
How to compost kitchen scraps on a balcony without bugs and smell?
关键是“透气、控湿、盖土”：菜叶果核与干叶/纸屑分层、保持湿润但不积水、每次加料盖一层土，并用带盖容器。做好的腐殖土是盆栽最好的肥料。
The keys are air, moisture and cover: layer greens with dry leaves or paper, keep damp not soggy, cover each addition with soil, and use a lidded bin. The finished humus is great potting fertilizer.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#阳台堆肥 #除臭 #腐殖土
为什么太阳能板能把阳光变成电？
Why can solar panels turn sunlight into electricity?
太阳能板像会吸光的蓝色窗户，把照在上面的阳光直接变成电。用阳光发电不用烧煤，干净又取之不尽，是帮地球的好办法。
Solar panels are like blue windows that soak up light and turn the sunlight shining on them straight into electricity. Making power from sunlight needs no coal, so it is clean and never runs out — a great way to help the Earth.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#太阳能 #发电 #清洁能源
为什么把旧东西重复用比扔掉更好？
Why is reusing old things better than throwing them away?
一个旧盒子可以当收纳筐，旧衣服可以改成抹布，这样就不必总买新的。少买少扔，工厂就少制造、地球也少负担。
An old box can become a storage bin and old clothes can turn into rags, so we don't always need to buy new. Buying and tossing less means factories make less and Earth carries less.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#重复利用 #旧物 #环保
为什么穿不下的衣服可以送给别人？
Why can clothes we've outgrown be given to others?
小衣服洗干净叠好，送给需要的弟弟妹妹，就能继续发挥作用。旧衣循环起来，既帮助了别人，也少了一些被丢掉的新衣服。
Clean, folded outgrown clothes given to younger siblings or others can keep being useful. Passing clothes on helps people and means fewer new clothes thrown away.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#旧衣 #捐赠 #循环
为什么废电池不能和普通垃圾一起扔？
Why shouldn't used batteries go in with ordinary trash?
电池里有金属和化学物质，如果被扔进土里或烧掉，会慢慢渗进泥土和地下水。送到专门的回收点，里面的金属还能被取出来再做新东西。
Batteries hold metals and chemicals that can slowly leak into soil and groundwater if buried or burned. Taken to a special collection point, their metals can be pulled out and made into something new.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#电池 #回收 #污染
为什么把废品送去回收有帮助？
Why does sending waste for recycling help?
回收的旧瓶子和旧纸可以做成新东西，就不用砍那么多树、挖那么多矿。这样垃圾变少，地球的资源也能用得更久。
Recycled bottles and paper can become new things, so we need to cut fewer trees and dig fewer mines. This leaves less trash and lets Earth's resources last longer.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#回收 #资源 #地球
为什么厨余堆肥对泥土有好处？
Why is composting kitchen scraps good for the soil?
菜叶、果皮和蛋壳在堆肥箱里被小虫子和小细菌慢慢分解，变成黑亮亮的营养土。把它撒进花园，植物会长得更壮，也少了被扔进垃圾填埋场的臭味垃圾。
Veggie leaves, peels, and eggshells are slowly broken down by tiny bugs and bacteria in a compost bin into dark, rich soil. Sprinkled in the garden, it helps plants grow strong and keeps smelly waste out of landfills.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#堆肥 #厨余 #土壤
为什么我们不能随手乱扔垃圾？
Why shouldn't we drop litter on the ground?
被随手丢掉的纸屑和塑料会随风滚进河流和草丛，弄脏小动物们的家。把它们丢进垃圾桶，街道和公园就能一直干干净净。
Thrown-away paper and plastic roll into rivers and bushes with the wind and dirty the homes of little animals. Putting them in the bin keeps streets and parks clean and tidy.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#不乱扔 #垃圾 #环境
为什么吃剩的食物能变成种菜的泥土？
Why can leftover food turn into soil for growing vegetables?
果皮、菜叶在堆肥里被微生物慢慢消化，变成松软的营养土，正好用来种花种菜。把厨余变成泥土，垃圾场就少了很多会发臭的废物。
Peels and leaves are slowly digested by microbes in compost into soft, nutritious soil perfect for flowers and veggies. Turning scraps into soil keeps smelly waste out of the garbage dump.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#厨余 #堆肥 #种植
为什么大风车能把风变成电？
Why can big wind turbines turn wind into electricity?
高高的风车叶片被风吹得转起来，连着发电机就把转动的力量变成电。风是永远用不完的自然力量，用它发电不会冒烟、也不排废气。
Tall turbine blades spin in the wind, and the generator turns that spinning motion into electricity. Wind is an endless natural force, and making power from it creates no smoke or fumes.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#风能 #发电 #清洁能源
为什么电动公交车对城市更友好？
Why are electric buses friendlier for the city?
电动公交车用电池驱动，行驶时不排出尾气和雾霾，街道上的空气更清新。它们还很安静，不会像大卡车那样轰隆作响，让城市更宜居。
Electric buses run on batteries and give off no exhaust or smog while driving, so the street air stays fresher. They are also quiet, without the rumble of big trucks, making the city nicer to live in.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#电动公交 #清洁 #城市
为什么走路或骑车上学对地球更好？
Why is walking or biking to school better for Earth?
汽车烧油会排出废气，而走路和骑车不烧油、也不冒烟。短距离出行多动动腿，既锻炼身体，又让空气更干净。
Cars burn fuel and puff out fumes, while walking and biking use no fuel and make no smoke. For short trips, using your legs keeps you fit and the air cleaner.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#步行 #骑车 #空气
为什么我们用的纸来自大树？
Why does the paper we use come from big trees?
造纸要用到树木里的纤维，所以每造一张纸，都可能少了一小片森林。把纸两面用完、做好回收，就能少砍一些树。
Paper is made from the fibers in trees, so every sheet may mean a little less forest. Using both sides and recycling means we cut fewer trees.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#纸张 #树木 #回收
为什么我们要把垃圾分开放？
Why do we sort our trash into different bins?
纸、塑料、果皮各有各的去处，分开丢才能被好好回收或堆肥。分类就像给垃圾找对家，地球也会轻松一点。
Paper, plastic, and peels each have their own place, and sorting them lets them be recycled or composted properly. Sorting is like finding the right home for trash, and Earth feels a bit lighter.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#垃圾分类 #回收 #环保
为什么离开房间要关灯？
Why should we turn off the light when we leave a room?
灯亮着就要用电，而电很多来自烧煤和天然气。随手关灯，既省钱，又少给空气添麻烦。
A lit lamp uses electricity, and much of it comes from burning coal and gas. Switching off saves money and gives the air less trouble.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#关灯 #省电 #空气
为什么玻璃瓶可以一直被回收？
Why can glass bottles be recycled again and again?
玻璃是用沙子熔化做成的，把它打碎、高温重熔，就能变成崭新的瓶子，质量不会变差。一只玻璃罐子循环使用很多次，比每次都造新的更省材料和能量。
Glass is made by melting sand, and when crushed and re-melted at high heat it becomes brand-new bottles without losing quality. One glass jar can loop through many lives, saving material and energy versus making new each time.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#玻璃 #回收 #循环