The environmental context of development ; The organism-environment relationship : ecological niches, adaptation, eco-devo, and niche construction ; Mechanisms of plasticity : eco-devo pathways as environmental cue and response systems ; Ecological development as niche construction : how plasticity shapes the environment and organism experiences ; Habitat construction and functional feedbacks : how organisms modify their external conditions ; Community-level consequences of habitat construction and eco-devo responses ; Natural selection in the light of the organism-environment relationship ; Epilogue. Research directions and real-world challenges