While the Arctic tundra loses color as the permafrost thaws, cities are greening.

Global CO2 emissions have increased from last year. This brings both emissions and the CO2 content in the atmosphere to a record high.

Injecting particles into the atmosphere would reduce the temperature increase. But for the world’s ecosystems there is no alternative to mitigation efforts.

Highly probable ocean tipping points need to be taken equally seriously as potential singular catastrophic climatic tipping points, write scientists and stakeholders in a new PNAS research perspective.

Big data demand new tools. To find out how much CO₂ the Atlantic will take up in the future, researchers pick up an old one. The legacy of Mendel.