Yi Xin’s paper entitled ‘Dual-Carbon Isotope Analysis of Benzene Polycarboxylic Acids for Tracking Black Carbon across Different Environments‘ has been accepted for publication in Applied Geochemistry, and has been selected as a ‘Editor’s Choice’  contribution ( each year AG only selects 10 editor’s choice papers) owing to the high quality of the work, which is also the milestone paper for our compound-specific radiocarbon analysis (CSRA) of polyaromatic organic matter. Congratulations to Yi Xin and Guangcai!