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Cook Islands vs United Kingdom

20 metrics with data for both countries. The solid line is Cook Islands; the dashed grey line is United Kingdom.

Country A · Cook Islands
Country B · United Kingdom

Climate

CO2 emissions

Cook Islands: 0.08 Mt CO2/year · 2024United Kingdom: 312.9 Mt CO2/year · 2024
0200400600197019801990200020102020United Kingdomhigh 2012

Carbon dioxide released each year from burning fossil fuels and industry. The main driver of global warming. Global Carbon Budget via Our World in Data

CO2 emissions per person

Cook Islands: 5.82 t CO2/person/year · 2024United Kingdom: 4.53 t CO2/person/year · 2024
0510197019801990200020102020United Kingdomlow 1971

Each person's share of their country's yearly CO2 emissions. A fairer way to compare countries of very different sizes. Global Carbon Budget via Our World in Data

Temperature anomaly

Cook Islands: 0.17 °C vs 1991-2020 · 2025United Kingdom: 0.94 °C vs 1991-2020 · 2025
-2-10119401960198020002020United Kingdomhigh 2021low 1958

How much warmer or cooler a country's year was compared with its 1991-2020 average. Watch the map turn red as you move the slider towards today. Copernicus Climate Change Service (ERA5) via Our World in Data

Methane emissions

Cook Islands: 0.01 Mt CO2e/year · 2024United Kingdom: 43.8 Mt CO2e/year · 2024
0501001501850190019502000United Kingdomhigh 1998

Methane traps around 80 times more heat than CO2 over 20 years. It comes mainly from livestock, rice, landfill and leaky fossil fuel infrastructure. Global Carbon Project / PRIMAP via Our World in Data

All greenhouse gases

Cook Islands: 0.09 Mt CO2e/year · 2024United Kingdom: 390.3 Mt CO2e/year · 2024
05001850190019502000United Kingdomhigh 2014

Every warming gas combined: CO2, methane and nitrous oxide, expressed as CO2-equivalents. Jones et al. / PRIMAP via Our World in Data

Nitrous oxide emissions

Cook Islands: 0.01 Mt CO2e/year · 2024United Kingdom: 28.1 Mt CO2e/year · 2024
020401850190019502000United Kingdomhigh 1994

N2O is nearly 300 times more warming than CO2 and comes mostly from fertilised farmland and livestock. Jones et al. / PRIMAP via Our World in Data

Aviation emissions per person

Cook Islands: 3,947 kg CO2/person/year · 2024United Kingdom: 481.9 kg CO2/person/year · 2024
02k4k201420162018202020222024United Kingdom

Each person's share of the CO2 from flights taking off in their country, including passengers and freight. ICCT / Graver et al. via Our World in Data

Energy

Energy use per person

Cook Islands: 30,724 kWh/person/year · 2023United Kingdom: 28,016 kWh/person/year · 2024
020k40k19801990200020102020United Kingdom

How much energy each person uses in a year, across electricity, transport, heating and industry. Energy Institute / Ember via Our World in Data

Solar electricity

Cook Islands: 50.0 % of electricity · 2024United Kingdom: 6.61 % of electricity · 2025
0204020002005201020152020United Kingdomhigh 2021

The share of a country's electricity generated from solar panels. The fastest-growing energy source in history. Ember / Energy Institute via Our World in Data

Wind electricity

Cook Islands: 0.00 % of electricity · 2024United Kingdom: 29.4 % of electricity · 2025
010203020002005201020152020United Kingdom

The share of a country's electricity generated from wind turbines, onshore and offshore. Ember / Energy Institute via Our World in Data

Coal electricity

Cook Islands: 0.00 % of electricity · 2024United Kingdom: 0.11 % of electricity · 2025
020406020002005201020152020United Kingdom

The share of electricity still generated by burning coal, the most polluting fuel. The number that must reach zero first. Ember / Energy Institute via Our World in Data

Oil electricity

Cook Islands: 50.0 % of electricity · 2024United Kingdom: 4.37 % of electricity · 2025
05010020002005201020152020United Kingdomlow 2021

The share of a country's electricity generated by burning oil. Rare on big grids, still common on islands. Ember via Our World in Data

Gas electricity

Cook Islands: 0.00 % of electricity · 2024United Kingdom: 31.1 % of electricity · 2025
0204020002005201020152020United Kingdom

The share of a country's electricity generated from natural gas, the least polluting fossil fuel but still a fossil fuel. Ember via Our World in Data

Land & Life

Deaths from natural disasters

Cook Islands: 0.00 deaths/year · 2021United Kingdom: 1.02 deaths/year · 2021
0102020002005201020152020United Kingdom

People killed by floods, storms, droughts, heatwaves, earthquakes and other disasters each year. Single events dominate single years. IHME Global Burden of Disease via Our World in Data

Red List Index

Cook Islands: 0.79 index (1 = species safe) · 2024United Kingdom: 0.97 index (1 = species safe) · 2024
00.51200020102020United Kingdomhigh 1995low 2021

Tracks extinction risk across all assessed species. 1 means no species at risk; falling values mean wildlife sliding towards extinction. IUCN / SDG 15.5.1 via Our World in Data

Nitrogen fertiliser use

Cook Islands: 5.26 kg N/ha of cropland · 2023United Kingdom: 114.5 kg N/ha of cropland · 2023
01002002005201020152020United Kingdomhigh 2016low 2007

Nitrogen applied per hectare of cropland. It feeds half the world, but runoff chokes rivers and coastal seas. FAO via Our World in Data

Urban population

Cook Islands: 76.9 % living in cities · 2025United Kingdom: 83.3 % living in cities · 2025
0501960198020002020United Kingdom

The share of people living in towns and cities. Urbanisation shapes energy use, land use and how people experience climate change. UN World Urbanization Prospects via Our World in Data

Water

Annual precipitation

Cook Islands: 1,504 mm/year · 2025United Kingdom: 962.5 mm/year · 2025
01k2k19401960198020002020United Kingdomhigh 1942low 1998

Total rain and snow that fell over a country in a year, averaged across its land area. Copernicus Climate Change Service (ERA5) via Our World in Data

Rainfall anomaly

Cook Islands: -12.3 % vs 1961-1990 · 2025United Kingdom: -2.00 % vs 1961-1990 · 2025
05019401960198020002020United Kingdomhigh 1942low 1998

How much wetter (teal) or drier (brown) a country's year was compared with its 1961-1990 average. A simple drought and deluge signal. Derived from Copernicus ERA5 precipitation via Our World in Data

Pollution

Air pollution (PM2.5)

Cook Islands: 3.30 µg/m³ annual mean · 2024United Kingdom: 8.80 µg/m³ annual mean · 2024
051020002005201020152020United Kingdomhigh 2020low 2021

Average exposure to fine particles small enough to enter the bloodstream. The WHO guideline is 5 µg/m³. World Bank / van Donkelaar et al. via Our World in Data