The world hit another carbon dioxide emissions milestone in 2018, with an estimated 2.7 percent increase in emissions since last year, according to a report published Wednesday in Environmental Research Letters, a scientific journal.
The Global Carbon Project, an organization that produced the report, estimates that global CO2 emissions from fossil fuel sources will hit a record high of more than 37 billion tons this year.
"We thought, perhaps hoped, emissions had peaked a few years ago," Rob Jackson, a professor at Stanford's School of Earth, Energy & Environmental Sciences and leader of the Global Carbon Project, said in a news release.
The Global Carbon Project report estimates that CO2 emissions in the U.S. alone ticked up 2.5 percent since last year partly due to extreme heat, as well as cold and the use of oil associated with it.
The UN report illustrates a widening chasm between reality and the international community's stated goal of limiting global warming to "well below the 2 degrees Celsius," or 3.6 degrees Fahrenheit.