Methane concentrations in the atmosphere made their biggest-ever registered increase in 2021, the United Nations reports. The causes of last year's rise are still being investigated, but analysis indicates that the largest contribution to the increase since 2007 comes from sources such as wetlands or rice paddies.

Interested in licensing this video ? Get in touch 👉 http://u.afp.com/UBbQ
N.B.: AFP’s services and content are for professional use only