Dave Goulson A recent landmark study that investigated alarming loss of insects is leaving scientists dumbfounded, deeply troubled, potentially the biggest-ever existential threat, risking ecosystem collapse too soon for comfort. In contrast to global warming, this may be much more imminently dangerous across-the-board to terrestrial life. An enormous loss of insect population, almost decimation in some parts of the world, threatens the life-giving structure of the ecosystem. This is a deadly serious problem!