2015 State of the Climate: Carbon Dioxide

Climate Change Indicators: Ocean Acidity

NOAA Global Monitoring Laboratory

Most industrialised countries have peaked carbon dioxide emissions during economic crises through strengthened structural change

Climate Change: Annual greenhouse gas index

2015 State of the Climate: El Niño came, saw, and conquered

Does the air become noticeably fresher in the spring/summer when the leaves bloom since they make oxygen? - Quora

ESSD - Indicators of Global Climate Change 2022: annual update of large-scale indicators of the state of the climate system and human influence

Each Country's Share of CO2 Emissions

Visualizing Global Per Capita CO2 Emissions

Are living trees and plants in cold regions measurably warmer in temperature than dead trees or plants in the same region? - Quora

Does the air become noticeably fresher in the spring/summer when the leaves bloom since they make oxygen? - Quora

Trends in global CO2 emissions: 2015 report PBL Netherlands Environmental Assessment Agency