Changes in behaviors and lifestyles are necessary to help cut greenhouse gas emissions and keep the world on track to meet the Paris Agreement’s global warming targets, according to the United Nation’s climate change arm.

The Intergovernmental Panel on Climate Change said in its most recent analysis on climate change mitigation Monday that, although the world has made some progress to slow the rate of greenhouse gas emissions growth, economies need to reduce fossil fuel use more aggressively in transportation, typically the highest-emitting U.S. sector, and industrial processes to prevent warming beyond 1.5 degrees Celcius.