swatting up on technology
I read something about Mobile Phone radiation interfering with Bee's radar and hence the increase in that technology has increased the number of Bees who get 'lost' and don't find their way back to the hives.
I was also told by a beekeeper that within three years of the bee population dying almost all vegetation on the planet would be dead.
From that point of view it is more than a problem of feeding the masses.