The pace of global warming has nearly doubled since 2015, the year the Paris climate agreement was adopted, and the atmosphere is on track to push permanently past the threshold of 1.5°C average warming before 2030, concludes a new study in the journal Geophysical Research Letters. The pace of global warming has nearly doubled since 2015, the year the Paris climate agreement was adopted, and the atmosphere is on track to push permanently past the threshold of 1.5°C average warming before 2030, concludes a new study in the journ... [7911 chars]