The numbers of is a big . Half of all insects have died since the . Over 40 per cent of insect could die in our . They are dying at a of 2.5 per cent a year. It is an "insect ". Scientists say there could be, "a collapse of Earth's ".
Pesticides are insects. Fewer insects mean less . Our crops depend on . Around 7.5 people will have no without insects. A big is honeybees. The of honeybee groups dropped a . A professor said: "We can't wait 25 years before we do anything because it will be too ."