Insects represent the most diverse group of animals on Earth and form critical links in terrestrial and freshwater food webs. Alarmingly, recent studies have reported dramatic insect declines in several parts of the world putting insect conservation firmly on the public and policy agenda. Gathering standardized and quantitative data on insects is time-consuming, labor-intensive, and requires large amounts of sustained funding that can rarely be met by conventional conservation-research funds. Technological and computational advances in remote sensing, which provide potential new solutions to this global challenge, will be discussed with a special emphasis on computer vision and radar entomology.