Last year was the world's second-warmest in 140 years of record-keeping, according to a newly-published government report out of the United States.
The figures have also confirmed the last decade is the warmest on record - close behind the warmest year in history which was 2016.
The Government report - compiled by Nasa, the UK Met Office and the National Oceanic and Atmospheric Administration - says that 2020 is likely to continue this warming trend.
Climate scientist Jim Salinger spoke to Logan Church.
