Participants of two research projects (Recycling Networks: Grassroots resilience tackling climate, environmental and poverty challenges (funded by the Swedish Research Council) and Mapping Waste Governance (funded by the Social Sciences and Humanities Research Council of Canada) collaborate in offering a critical inter- and transdisciplinary perspective on waste and waste actors (waste picker cooperatives, associations, community-based organizations, partnerships, networks and NGOs). The research is conducted in the following cities: Buenos Aires (Argentina), São Paulo (Brazil), Vancouver and Montreal (Canada), Kisumu (Kenya), Managua (Nicaragua) and Dar es Salaam (Tanzania). Together we examine the challenges that innovative grassroots initiatives and networks encounter in generating livelihoods to improve household waste collection and recycling, particularly in informal settlements of global South cities. We seek to map waste governance and successful waste management initiatives, arrangements and policies involving grassroots initiatives. In this report, we present a brief description of solid waste governance in the cities where we conducted fieldwork. We then illuminate some of our findings on grassroots innovations involving waste pickers or waste workers in these cities. Both research projects combine multi-case studies of waste picker groups and local government initiatives, apply qualitative research tools and participatory action research (e.g. photo voice, participant observation, workshops, surveys and interviews). We are interested in understanding processes, challenges and opportunities related to how these grassroots initiatives and networks operate to bring about socio-environmental and economic change? How they address challenges and what the assets are in everyday waste governance that can be explored to make waste governance more sustainable and thus more inclusive? Researchers involved in these two projects, key stakeholders from grassroots initiatives in these countries, representatives from some international waste picker networks and local and regional government officials from Kisumu, Kenya, met between 23rd and 29th of April 2018, in Kisumu to present and discuss the results of the first year of research activities, which are herewith documented.