More than 100 leading scientists from all regions of the globe contributed to a major new UN report on the effects on climate change on land that was published on Thursday.

One of those experts is Dr. Valérie Masson-Delmotte, and in an interview with UN News’s Daniel Johnson, she warns that although land use today is “absolutely unsustainable” for many reasons, it can also be part of the solution to reducing carbon dioxide emissions.