Mineral grains show Colorado River filled a basin at the canyon’s head millions of years ago
Last updated: April 16, 2026 10:28 PM
CO₂
431.9ppm
+1.9
/ year
CH₄
1945.85ppb
+8.44
/ year
Temp
+1.48°C
Peak +1.73°C
Population
8.1B
+67M
/ year