This research was carried out with the Adi and Galo tribes of East Siang and West Siang districts of Arunachal Pradesh, India to understand fishing methods employed by them using stones and boulders occurring in the river beds of small tributaries of the Siang River in the study area. The identified sustainable fishing technique is locally known as Lipum and practised by these communities. The capture of fish ranged from 4-10 kg per Lipum and one person could make 3-4 different Lipum structures per day.

People’s Science Institute carried out the first trials of the System of Wheat Intensification (SWI) during rabi 2006-07. Starting with systematic research trials on farmers’ fields, SWI practice has now spread to many Indian states, through the efforts of PSI and other voluntary organizations.