Biomonitoring in aquatic environments is the science of inferring the ecological condition of rivers, lakes, streams, and wetlands by examining the organisms that live there. While aquatic biomonitoring is the most common form of such biomonitoring, any ecosystem can be studied in this manner. The logo of this month with two petrels mobitoring from the sky is related with this news: Latitudinal exposure to DDTs, HCB, PCBs, PBDEs and DP in giant petrels across the Southern Ocean. Related whit it: Urban pigeons might be a good way to detect lead and other toxic compounds in cities or Using urban pigeons to monitor lead pollution. There are many other news to read. Until next number. JCP