World populationWorld · estimated world population
Then · 19905.33 B
→Latest data · 20248.16 B
UN WPP 2024● 1990
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LifeTally · 1990 → 2025 · 🇺🇸 United States
How has the world changed in your lifetime?
Choose a birth year and country. One answer connects population, life expectancy, cities, forests, aviation and the internet.
Life expectancyUnited States · life expectancy at birth
Then · 199075.1 years
→Latest data · 202379.3 years
UN WPP 2024≈ 1975–2000
People onlineWorld · users worldwide
Then · 19900.003 B
→Latest data · 20256.047 B
ITU 2025● 1990
Urban populationUnited States · share living in cities
Then · 199076.9 %
→Latest data · 202580.2 %
UN WUP 2025≈ 1975–2000
Forest areaUnited States · forest area
Then · 1990302.5 M ha
→Latest data · 2025308.9 M ha
FAO FRA 2025● 1990
Air passenger journeysWorld · passenger journeys worldwide
Then · 19901.03 B
→Latest data · 20234.27 B
ICAO 2023● 1990
What these numbers mean
Each card names its data year. Historical values are estimates and trends are not personal predictions.
LifeTally · Planet Observatory
Our planet is changing. See it happen.
Three visual stories connect a century of climate, every year of the space age and twelve thousand years of humanity.
01 · CLIMATE
🇺🇸 United States
+1.20 °Cobserved changefirst vs last decade, 1921–2020
+3.99 °Cscenario for 2100middle-emissions pathway, not a weather forecast
observations 1921–2020 scenario 2015–2100
ScenarioExplore climate →
16,000functioning satellites
4,510objects launched in 2025
18,840satellites remain in orbit46,420objects tracked in total
1957 · Sputnik 1timeline starts2025
Explore orbit →03 · HUMANITY
World population—from early settlements to 2100
Ancient estimates, growth during your lifetime and the UN medium projection—with no guesswork beyond its official horizon.
Explore humanity →20248.16 B2084 · UN peak10.29 B210010.18 B