The Climate Change Challenge

Where Do Emissions Come From?

Total net greenhouse gas (GHG) emissions worldwide in 2024, by sector

Global GHG emissions set a new record at 57.7 Gt CO2e in 2024, an 8% growth from the previous decade (2010-2019 average.)

Does not sum up to 100% due to rounding.

Source: UN Emissions Gap Report 2025

Atmospheric CO2 Concentration and Earth Surface Temperature Change (1840-2024)

The atmospheric CO2 concentration in 2024 was 422.5 ppm. The year was the warmest on record with the average temperature rise exceeding 1.5 C above the preindustrial level

Source: IEA Global Energy Review 2025

Source: NOAA Climate. Gov

Solving the Greenhouse Gas Challenge

Despite the recent exponential increase in GHG emissions and global temperatures, there is real cause for optimism. Learn more about the opportunity and progress being made below.