01Ocean · 海洋
The ocean is quietly running out of breath
海洋正在悄悄失去呼吸
Watching 观察
Dissolved oxygen and vertical mixing — not sea-surface temperature. Warmer water holds less oxygen and layers more stiffly, so the ocean's overturning breath slows.
看的是溶解氧与垂直混合，而不是海表温度。水越暖，含氧越少、分层越硬，海洋的"呼吸"就越慢。
Challenge 挑战
Temperature is easy from orbit; oxygen mostly needs ships and floats. So the variable that decides whether fish, fisheries and coastal economies survive is sampled orders of magnitude less often.
温度卫星就能看，氧气得靠船和浮标。于是决定渔业与沿海经济命运的那个变量，采样密度低了几个数量级。
Insight 洞见
We watch the ocean's fever because it is visible from space. We are not watching whether it can breathe.
我们盯着海洋的"发烧"，因为卫星看得见；却没有在看它还能不能呼吸。
>90%of the Earth system's excess heat has gone into the ocean
地球系统多余热量的九成以上被海洋吸收
~2%global ocean oxygen lost, 1960–2010
1960–2010 全球海洋含氧量下降约 2%
2024recordhighest ocean heat content on record
2024 年海洋热含量创历史新高
Sources
IPCC SROCC — Ocean & Cryosphere
IPCC AR6 WG1
Copernicus Marine Service
NOAA
02Nutrients · 氮磷
Everyone counts carbon. Almost nobody counts nitrogen.
所有人都在算碳，几乎没有人在算氮
Watching 观察
Reactive nitrogen and phosphorus flows — the planetary boundary that is transgressed further than climate, and that runs straight through food, water and coastal dead zones.
看的是活性氮与磷的流动——这条行星边界的超越幅度比气候更大，直接连着粮食、水与近海死亡区。
Challenge 挑战
There is no nitrogen equivalent of a tonne of CO₂e: no common unit, no disclosure standard, no market. What cannot be reported does not get managed.
氮没有"吨二氧化碳当量"这样的通用单位，没有披露准则，没有市场。无法被报告的，就无法被管理。
Insight 洞见
Net-zero is a single-dial story told about a nine-dial planet — and we are turning the one dial we know how to read.
"净零"是一个单表盘的故事，而这颗星球有九个表盘；我们只在拧那个自己会读的。
6 / 9planetary boundaries assessed as transgressed (2023)
九条行星边界中已有六条被越过
~50%of applied nitrogen never reaches a crop
施用的氮肥约一半从未被作物吸收
~½of humanity is fed by synthetic nitrogen fixation
全球约一半人口依赖人工固氮而得以进食
Sources
Stockholm Resilience Centre — Planetary Boundaries
Our World in Data
FAO Soils Portal
03AI & Grid · 算力与电网
The constraint on AI is the substation, not the chip
卡住 AI 的不是芯片，是变电站
Watching 观察
Interconnection queues, transformer lead times, and the water used to cool inference — the physical layer under every model roadmap.
看的是电网并网排队、变压器交付周期，以及冷却推理所耗的水——所有模型路线图底下的物理层。
Challenge 挑战
Compute plans are made in months; grid assets are built in years. The gap is not a procurement problem, it is a planning-horizon mismatch that no single team owns.
算力规划以月计，电网资产以年计。这不是采购问题，而是规划时间尺度的错配，且无人负责。
Insight 洞见
The industry asks "how many GPUs?". The planet is asking "how many transformers, on whose grid, cooled with whose water?"
行业在问"要多少张 GPU"，地球在问"要多少台变压器、接在谁的电网、用谁的水来冷却"。
~415TWhglobal data-centre electricity, 2024 — about 1.5% of world demand
2024 年全球数据中心用电，约占全球用电 1.5%
~945TWhIEA projection for 2030 — roughly a doubling
IEA 预计 2030 年将翻约一倍
~2.6TWof generation and storage waiting in US interconnection queues
美国并网排队中的发电与储能容量
Sources
IEA — Energy and AI
IEA — Data centres & networks
Berkeley Lab — Queued Up
04Soil · 土壤
The thinnest layer we all stand on
我们所有人站着的，是最薄的一层
Watching 观察
Topsoil depth, soil organic carbon and soil biodiversity — the living crust that produces most of what we eat and stores more carbon than the atmosphere.
看的是表土厚度、土壤有机碳与土壤生物多样性——它生产我们大部分的食物，储碳量高于大气。
Challenge 挑战
Soil forms on a millennial clock and is lost on an annual one. Degradation is slow, local and unphotogenic, so it never becomes news.
土壤以千年计生成，以年计流失。退化缓慢、分散、不上镜，于是永远成不了新闻。
Insight 洞见
Soil carbon is the largest terrestrial asset on Earth with no owner, no ledger, and no quarterly report.
土壤碳，是地球上最大的一笔陆地资产——没有所有者，没有账本，也没有季报。
~33%of the world's soils are moderately to highly degraded
全球约三分之一土壤中度至重度退化
~3×more carbon in soils than in the atmosphere
土壤储碳量约为大气的三倍
~1,000yrsto form a few centimetres of topsoil
形成几厘米表土需要约千年
Sources
FAO — Global Soil Partnership
UNCCD — Land degradation
Our World in Data
05Groundwater · 地下水
Water we cannot see, weighed from orbit
看不见的水，被卫星称了重量
Watching 观察
Aquifer mass change, measured as tiny variations in Earth's gravity field by the GRACE and GRACE-FO satellites.
看的是含水层的质量变化——由 GRACE / GRACE-FO 卫星通过地球重力场的微小起伏测得。
Challenge 挑战
Groundwater is invisible, unmetered in most of the world, and drawn by millions of independent decisions. It is the ultimate commons with no gauge on the dashboard.
地下水看不见、多数地区不计量、由千万个独立决策抽取。它是最典型的公地，却没有仪表盘。
Insight 洞见
We learned the world's aquifers were emptying by weighing the planet — not by looking down the well.
我们发现世界的含水层正在被抽空，靠的是"称量地球"，而不是低头看井。
21 / 37major global aquifer systems past sustainability tipping points
全球 37 个主要含水层中 21 个已过可持续临界点
~99%of Earth's liquid freshwater is groundwater
地球液态淡水中约 99% 是地下水
cm/yrland subsidence in major basins, largely irreversible
主要盆地地面每年沉降数厘米，多不可逆
Sources
NASA JPL — GRACE / GRACE-FO
UN-Water — Groundwater
USGS
06Circulation · 洋流
A current billions depend on, watched by a handful of moorings
数十亿人仰赖的洋流，由少数几个浮标看守
Watching 观察
The Atlantic overturning circulation — the conveyor that sets European winters and the position of tropical rain belts.
看的是大西洋经向翻转环流：它决定欧洲的冬天，也决定热带雨带落在哪里。
Challenge 挑战
Continuous direct observation began only in 2004, from a single line of moorings. A civilisational variable rests on a thin, renewable-every-few-years research grant.
连续直接观测始于 2004 年，只有一条锚系阵列。一个文明级变量，挂在几年一续的科研经费上。
Insight 洞见
The most consequential number in the climate system has about twenty years of record — and a fragile funding line.
气候系统里最要命的那个数字，只有二十年记录，和一条随时可能断的经费线。
2004start of continuous AMOC observation at 26°N
北纬 26° 连续观测自 2004 年开始
low / highIPCC framing: low likelihood, high impact this century
IPCC 定性：本世纪低概率、高影响
billionsof people in monsoon regions exposed to a shifted rain belt
季风区数十亿人口暴露于雨带迁移风险
Sources
IPCC AR6 WG1 — Ocean circulation
National Oceanography Centre
NOAA
07Permafrost · 永冻土
The carbon that is in no one's budget
没有被写进任何预算的碳
Watching 观察
Ground temperature and thaw depth across the permafrost region, where frozen soils hold roughly twice the carbon now in the atmosphere.
看的是永冻区的地温与融化深度——那里的冻土封存的碳，约为当前大气含碳量的两倍。
Challenge 挑战
Most corporate and national pathways treat permafrost emissions as external background. It is a liability held off the balance sheet by convention, not by evidence.
多数企业与国家路径把永冻土排放当作外部背景。这是一笔按惯例被移出资产负债表的负债，而非有证据支持。
Insight 洞见
Every carbon budget quietly assumes the ground stays frozen. That assumption has no line item and no owner.
每一份碳预算都默认"地是冻着的"。这个假设没有科目，也没有负责人。
~1,400GtCcarbon stored in permafrost-region soils
永冻区土壤储碳量（约 1,400–1,600 GtC）
3–4×Arctic warming rate versus the global average
北极升温速率约为全球平均的三到四倍
~2×permafrost carbon versus carbon now in the atmosphere
永冻土碳约为当前大气碳的两倍
Sources
NOAA Arctic Report Card
Woodwell Climate Research Center
IPCC AR6 WG1
08Aerosols · 气溶胶
When we cleaned the air, the world got hotter
当我们把空气洗干净，世界反而更热了
Watching 观察
Aerosol cooling — including ship tracks over shipping lanes, which brightened marine clouds until sulphur was cut from marine fuel in 2020.
看的是气溶胶的降温作用，包括航线上的"船迹云"——直到 2020 年船燃硫含量被大幅限制。
Challenge 挑战
Aerosol forcing remains the single largest uncertainty in climate projections, and the sign of a policy's climate effect can be opposite to the sign of its health effect.
气溶胶强迫仍是气候预测中最大的不确定项；一项政策对健康有益，对气候的方向却可能相反。
Insight 洞见
Doing the unambiguously right thing for human lungs removed a shade we never knew we were standing in.
我们为人的肺做了一件毫无疑问正确的事，却顺手撤走了一片自己从不知道正站在其中的阴凉。
3.5 → 0.5%Sglobal marine fuel sulphur cap, from 2020
2020 年起全球船燃硫上限由 3.5% 降至 0.5%
~80%cut in shipping sulphur emissions
航运硫排放下降约 80%
2024first calendar year about 1.5 °C above pre-industrial
2024 年成为首个较工业化前高约 1.5°C 的完整年份
Sources
IMO — Sulphur 2020
Copernicus Climate Change Service
NASA Earth Observatory
09Materials · 材料
The richest ore body is in the drawer
最富的那座矿，在抽屉里
Watching 观察
Electronic waste as a resource flow: the gold, copper, cobalt and rare earths already sitting inside devices people own.
把电子废弃物看作资源流：金、铜、钴、稀土，早已躺在人们手中的设备里。
Challenge 挑战
The world's fastest-growing waste stream is growing about five times faster than documented recycling. Collection, not chemistry, is the bottleneck.
全球增长最快的废弃物流，增速约为正规回收增速的五倍。瓶颈不在冶金技术，而在回收网络。
Insight 洞见
A device company's largest untapped mine is the installed base it has already sold.
对一家硬件公司来说，最大的未开采矿藏，是它已经卖出去的那些设备。
62Mte-waste generated worldwide in 2022
2022 年全球产生电子废弃物 6,200 万吨
22.3%formally collected and recycled
仅 22.3% 被正规收集与回收
82Mtprojected annual e-waste by 2030
预计 2030 年将达 8,200 万吨/年
Sources
Global E-waste Monitor 2024 (UNITAR / ITU)
ITU
10Orbit · 轨道
Who is watching the watchers
谁在看着那些看着地球的眼睛
Watching 观察
The continuity of Earth observation itself: ageing missions, funding gaps between satellites, and an increasingly crowded low Earth orbit.
看的是"观测能力"本身：老化的卫星、任务之间的空档，以及日益拥挤的近地轨道。
Challenge 挑战
Climate records only have meaning if they are unbroken. A three-year instrument gap can cost decades of comparability — and debris risk is rising faster than replacement cadence.
气候记录的价值在于连续。三年的仪器空档可能毁掉几十年的可比性；而碎片风险的增速，快过卫星更替的节奏。
Insight 洞见
Every number on this page reached you through a handful of ageing instruments in a crowded sky. Watching is itself a fragile infrastructure — and nobody's roadmap owns it.
这一页上的每一个数字，都来自拥挤天空中少数几台正在老去的仪器。"看见"本身就是脆弱的基础设施，而它不在任何一份路线图里。
~36,000tracked debris objects larger than 10 cm
被编目的 10 厘米以上空间碎片约 3.6 万个
~1.2Mestimated fragments between 1 and 10 cm
1–10 厘米碎片估计约 120 万个
decadesof comparability lost to a single instrument gap
一次仪器断档，可能损失数十年的可比性
Sources
ESA Space Debris Office
CEOS — Committee on Earth Observation Satellites
NASA Earth Observatory