RIVERS CHANGE course, forests catch flame, glaciers melt: Raj Bhagat Palanichamy of the World Resources Institute India, a research centre, has tracked all of these injuries to India’s landscape through satellite images. In the past year, he has been trying to map a different kind of harm, identifying infection hotspots, pinpointing hospital beds and cross-checking official fatality numbers by examining infrared images of the fires at crematoria.