The vital insect kingdom of the world is undergoing 'death by a thousand cuts', a top bug expert has revealed. The Earth is probably losing 1% to 2% of its insects every year. Climate change, insecticides, herbicides, invasive species and changes in land use are to be blamed, University of Connecticut entomologist David Wagner said. The enormity and complexity of the problem is still unclear. Monarch butterflies and honeybees, which have faced dramatic decline, best exemplify the extent of the problem, they said. The good news however, the scientists said, is that people can do a lot of reverse these trends.