This presentation was made at the 'Towards a Higher Education of Inclusion, Collaboration and Community Engagement' workshop by D. Narasimhan from the Dept. of Botany, Madras Christian College, Chennai. Professor Narasimhan pointed out that agriculture is the single most impactful shift upon the environment in human history. Settled cultivation wiped out huge swathes of forest and is far more destructive than the much-maligned shifting cultivation, also described as slash-and-burn cultivation. This shift in human practice is integral to cultures and indigenous medicines though. Food has become globalised much before markets ever did - with fruits and vegetables indigenous to locations across the globe become central to Indian cuisine. Sacred groves are praised as examples of culture protecting ecology but are vulnerable to the decisions of hard economics with land needs for agriculture or other purposes shrinking their boundaries. Again, a sacred grove could hold certain species alone as totemic objects while others could be destroyed.