Muki Haklay, a geography professor at University College of London (UCL), thinks of environmental information as "an object of wonder" and speaks with Angela about healthy knowledge exchange at the Extreme Citizen Science Lab between local environmental monitors and UCL researchers.In Data Dialogues, we highlight two people working with environmental data and then bring them in conversation with each other. Listen to this conversation on its own or pair it with Sof Petros's conversation in Episode 13 and Sof and Muki's dialogue in Episode 15.  You can access a transcript of this episode and Show Notes on our website and join in the conversation on Twitter @OpenEnviroData and Instagram @OpenEnviroData! Muki Haklay (he/him) is in the Department of Geography at UCL, University College London. He’s interested in issues of environmental information and public access use and creation and co-founded Mapping for Change and the Extreme Citizen Science Research group, or ExCiteS.Angela Eaton (she/her) is the Director of Data Inclusion at Open Environmental Data  and host of Data Dialogues.