CO2 in bubbles locked away in Antarctic ice suggest Earth has almost reached 1.5C warming limit
www.abc.net.au
Scientists behind a study of carbon dioxide within bubbles from Antarctic ice cores want policymakers to adopt an earlier baseline for global warming.

In short:

Scientists say data from Antarctica ice core shows world has already warmed 1.49 degrees Celsius due to human activity.

The study calculates a pre-1700 baseline based off carbon content in the ice.

What’s next?

Researchers behind the study want politicians and scientists to use their modelling as a baseline rather than a commonly used 1850-1900 time period when the Industrial Revolution had already started.