When was the last time you were stung by a wasp, or were surrounded by a cloud of butterflies? Insect numbers are in serious decline across the world - in some places by over 90% - and the consequences rival those of climate change. We rely on insect pollination for our agriculture; insects are a prime food source for birds and fish; and they are a key strut holding up life on Earth. Part warning, part celebration, this book highlights why we need to wake up to this unrolling environmental disaster.